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Finding the Fourth Proportional to 7,234,404.65, 9,982,929.92 and 3,970,700.81

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Solution

The fourth proportional to 7,234,404.65, 9,982,929.92 and 3,970,700.81 is: 5,479,266.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,234,404.65 : 9,982,929.92 = 3,970,700.81 : x
  2. Step 2: Convert to fraction form
    7,234,404.65/9,982,929.92 = 3,970,700.81/x
  3. Step 3: Cross multiply
    7,234,404.65x = 9,982,929.92 × 3,970,700.81
  4. Step 4: Simplify right side
    7,234,404.65x = 39,639,227,943,339.05
  5. Step 5: Solve for x
    x = 39,639,227,943,339.05/7,234,404.65
  6. Step 6: Final answer
    x = 5,479,266.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.