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Finding the Fourth Proportional to 60,687.16, 83,787.19 and 39,186.52

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Solution

The fourth proportional to 60,687.16, 83,787.19 and 39,186.52 is: 54,102.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,687.16 : 83,787.19 = 39,186.52 : x
  2. Step 2: Convert to fraction form
    60,687.16/83,787.19 = 39,186.52/x
  3. Step 3: Cross multiply
    60,687.16x = 83,787.19 × 39,186.52
  4. Step 4: Simplify right side
    60,687.16x = 3,283,328,089.24
  5. Step 5: Solve for x
    x = 3,283,328,089.24/60,687.16
  6. Step 6: Final answer
    x = 54,102.52

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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.