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Finding the Fourth Proportional to 61,881.68, 92,807.65 and 28,569.75

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Solution

The fourth proportional to 61,881.68, 92,807.65 and 28,569.75 is: 42,847.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,881.68 : 92,807.65 = 28,569.75 : x
  2. Step 2: Convert to fraction form
    61,881.68/92,807.65 = 28,569.75/x
  3. Step 3: Cross multiply
    61,881.68x = 92,807.65 × 28,569.75
  4. Step 4: Simplify right side
    61,881.68x = 2,651,491,287.16
  5. Step 5: Solve for x
    x = 2,651,491,287.16/61,881.68
  6. Step 6: Final answer
    x = 42,847.76

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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.