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Finding the Fourth Proportional to 62,700.96, 86,513.60 and 39,737.44

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Solution

The fourth proportional to 62,700.96, 86,513.60 and 39,737.44 is: 54,828.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,700.96 : 86,513.60 = 39,737.44 : x
  2. Step 2: Convert to fraction form
    62,700.96/86,513.60 = 39,737.44/x
  3. Step 3: Cross multiply
    62,700.96x = 86,513.60 × 39,737.44
  4. Step 4: Simplify right side
    62,700.96x = 3,437,828,989.18
  5. Step 5: Solve for x
    x = 3,437,828,989.18/62,700.96
  6. Step 6: Final answer
    x = 54,828.97

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1.5x scale

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.