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Finding the Fourth Proportional to 39,900,691.85, 55,062,978.38 and 22,259,594.48

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Solution

The fourth proportional to 39,900,691.85, 55,062,978.38 and 22,259,594.48 is: 30,718,253.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,900,691.85 : 55,062,978.38 = 22,259,594.48 : x
  2. Step 2: Convert to fraction form
    39,900,691.85/55,062,978.38 = 22,259,594.48/x
  3. Step 3: Cross multiply
    39,900,691.85x = 55,062,978.38 × 22,259,594.48
  4. Step 4: Simplify right side
    39,900,691.85x = 1,225,679,569,488,509.50
  5. Step 5: Solve for x
    x = 1,225,679,569,488,509.50/39,900,691.85
  6. Step 6: Final answer
    x = 30,718,253.56

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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.