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Finding the Fourth Proportional to 83,957.88, 115,870.04 and 62,700.24

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Solution

The fourth proportional to 83,957.88, 115,870.04 and 62,700.24 is: 86,532.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,957.88 : 115,870.04 = 62,700.24 : x
  2. Step 2: Convert to fraction form
    83,957.88/115,870.04 = 62,700.24/x
  3. Step 3: Cross multiply
    83,957.88x = 115,870.04 × 62,700.24
  4. Step 4: Simplify right side
    83,957.88x = 7,265,079,316.81
  5. Step 5: Solve for x
    x = 7,265,079,316.81/83,957.88
  6. Step 6: Final answer
    x = 86,532.43

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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.