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Finding the Fourth Proportional to 61,716.39, 92,500.12 and 28,390.74

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Solution

The fourth proportional to 61,716.39, 92,500.12 and 28,390.74 is: 42,551.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,716.39 : 92,500.12 = 28,390.74 : x
  2. Step 2: Convert to fraction form
    61,716.39/92,500.12 = 28,390.74/x
  3. Step 3: Cross multiply
    61,716.39x = 92,500.12 × 28,390.74
  4. Step 4: Simplify right side
    61,716.39x = 2,626,146,856.89
  5. Step 5: Solve for x
    x = 2,626,146,856.89/61,716.39
  6. Step 6: Final answer
    x = 42,551.85

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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.