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Finding the Fourth Proportional to 7,971,307,538.70, 11,956,961,308.05 and 7,971,307,538.70

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Solution

The fourth proportional to 7,971,307,538.70, 11,956,961,308.05 and 7,971,307,538.70 is: 11,956,961,308.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,971,307,538.70 : 11,956,961,308.05 = 7,971,307,538.70 : x
  2. Step 2: Convert to fraction form
    7,971,307,538.70/11,956,961,308.05 = 7,971,307,538.70/x
  3. Step 3: Cross multiply
    7,971,307,538.70x = 11,956,961,308.05 × 7,971,307,538.70
  4. Step 4: Simplify right side
    7,971,307,538.70x = 95,312,615,814,803,177,472
  5. Step 5: Solve for x
    x = 95,312,615,814,803,177,472/7,971,307,538.70
  6. Step 6: Final answer
    x = 11,956,961,308.05

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.