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Finding the Fourth Proportional to 11,211,673.20, 15,706,971.30 and 11,211,673.20

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Solution

The fourth proportional to 11,211,673.20, 15,706,971.30 and 11,211,673.20 is: 15,706,971.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211,673.20 : 15,706,971.30 = 11,211,673.20 : x
  2. Step 2: Convert to fraction form
    11,211,673.20/15,706,971.30 = 11,211,673.20/x
  3. Step 3: Cross multiply
    11,211,673.20x = 15,706,971.30 × 11,211,673.20
  4. Step 4: Simplify right side
    11,211,673.20x = 176,101,429,177,379.16
  5. Step 5: Solve for x
    x = 176,101,429,177,379.16/11,211,673.20
  6. Step 6: Final answer
    x = 15,706,971.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.