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Finding the Fourth Proportional to 61,842.88, 92,640.66 and 28,517.32

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Solution

The fourth proportional to 61,842.88, 92,640.66 and 28,517.32 is: 42,718.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,842.88 : 92,640.66 = 28,517.32 : x
  2. Step 2: Convert to fraction form
    61,842.88/92,640.66 = 28,517.32/x
  3. Step 3: Cross multiply
    61,842.88x = 92,640.66 × 28,517.32
  4. Step 4: Simplify right side
    61,842.88x = 2,641,863,346.23
  5. Step 5: Solve for x
    x = 2,641,863,346.23/61,842.88
  6. Step 6: Final answer
    x = 42,718.96

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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.