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Finding the Fourth Proportional to 61,929.92, 85,631.04 and 60,929.28

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Solution

The fourth proportional to 61,929.92, 85,631.04 and 60,929.28 is: 84,247.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,929.92 : 85,631.04 = 60,929.28 : x
  2. Step 2: Convert to fraction form
    61,929.92/85,631.04 = 60,929.28/x
  3. Step 3: Cross multiply
    61,929.92x = 85,631.04 × 60,929.28
  4. Step 4: Simplify right side
    61,929.92x = 5,217,437,612.85
  5. Step 5: Solve for x
    x = 5,217,437,612.85/61,929.92
  6. Step 6: Final answer
    x = 84,247.45

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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.