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Finding the Fourth Proportional to 7,421,856.20, 11,132,784.30 and 7,421,856.20

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Solution

The fourth proportional to 7,421,856.20, 11,132,784.30 and 7,421,856.20 is: 11,132,784.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421,856.20 : 11,132,784.30 = 7,421,856.20 : x
  2. Step 2: Convert to fraction form
    7,421,856.20/11,132,784.30 = 7,421,856.20/x
  3. Step 3: Cross multiply
    7,421,856.20x = 11,132,784.30 × 7,421,856.20
  4. Step 4: Simplify right side
    7,421,856.20x = 82,625,924,180,217.67
  5. Step 5: Solve for x
    x = 82,625,924,180,217.67/7,421,856.20
  6. Step 6: Final answer
    x = 11,132,784.30

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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.