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Finding the Fourth Proportional to 61,720.88, 92,618.27 and 56,701.71

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Solution

The fourth proportional to 61,720.88, 92,618.27 and 56,701.71 is: 85,086.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,720.88 : 92,618.27 = 56,701.71 : x
  2. Step 2: Convert to fraction form
    61,720.88/92,618.27 = 56,701.71/x
  3. Step 3: Cross multiply
    61,720.88x = 92,618.27 × 56,701.71
  4. Step 4: Simplify right side
    61,720.88x = 5,251,614,002.73
  5. Step 5: Solve for x
    x = 5,251,614,002.73/61,720.88
  6. Step 6: Final answer
    x = 85,086.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.