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Finding the Fourth Proportional to 67,752.64, 93,489.78 and 39,073.36

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Solution

The fourth proportional to 67,752.64, 93,489.78 and 39,073.36 is: 53,916.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,752.64 : 93,489.78 = 39,073.36 : x
  2. Step 2: Convert to fraction form
    67,752.64/93,489.78 = 39,073.36/x
  3. Step 3: Cross multiply
    67,752.64x = 93,489.78 × 39,073.36
  4. Step 4: Simplify right side
    67,752.64x = 3,652,959,830.26
  5. Step 5: Solve for x
    x = 3,652,959,830.26/67,752.64
  6. Step 6: Final answer
    x = 53,916.13

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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.