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Finding the Fourth Proportional to 59,981.80, 82,830.18 and 40,167.40

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Solution

The fourth proportional to 59,981.80, 82,830.18 and 40,167.40 is: 55,468.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,981.80 : 82,830.18 = 40,167.40 : x
  2. Step 2: Convert to fraction form
    59,981.80/82,830.18 = 40,167.40/x
  3. Step 3: Cross multiply
    59,981.80x = 82,830.18 × 40,167.40
  4. Step 4: Simplify right side
    59,981.80x = 3,327,072,972.13
  5. Step 5: Solve for x
    x = 3,327,072,972.13/59,981.80
  6. Step 6: Final answer
    x = 55,468.04

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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.