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Finding the Fourth Proportional to 57,482.97, 79,324.92 and 31,988.04

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Solution

The fourth proportional to 57,482.97, 79,324.92 and 31,988.04 is: 44,142.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,482.97 : 79,324.92 = 31,988.04 : x
  2. Step 2: Convert to fraction form
    57,482.97/79,324.92 = 31,988.04/x
  3. Step 3: Cross multiply
    57,482.97x = 79,324.92 × 31,988.04
  4. Step 4: Simplify right side
    57,482.97x = 2,537,448,713.96
  5. Step 5: Solve for x
    x = 2,537,448,713.96/57,482.97
  6. Step 6: Final answer
    x = 44,142.62

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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.