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Finding the Fourth Proportional to 57,691.59, 79,621.70 and 33,487.38

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Solution

The fourth proportional to 57,691.59, 79,621.70 and 33,487.38 is: 46,216.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,691.59 : 79,621.70 = 33,487.38 : x
  2. Step 2: Convert to fraction form
    57,691.59/79,621.70 = 33,487.38/x
  3. Step 3: Cross multiply
    57,691.59x = 79,621.70 × 33,487.38
  4. Step 4: Simplify right side
    57,691.59x = 2,666,321,956.71
  5. Step 5: Solve for x
    x = 2,666,321,956.71/57,691.59
  6. Step 6: Final answer
    x = 46,216.82

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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.