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Finding the Fourth Proportional to 68,752.72, 94,830.20 and 58,517.60

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Solution

The fourth proportional to 68,752.72, 94,830.20 and 58,517.60 is: 80,712.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,752.72 : 94,830.20 = 58,517.60 : x
  2. Step 2: Convert to fraction form
    68,752.72/94,830.20 = 58,517.60/x
  3. Step 3: Cross multiply
    68,752.72x = 94,830.20 × 58,517.60
  4. Step 4: Simplify right side
    68,752.72x = 5,549,235,711.52
  5. Step 5: Solve for x
    x = 5,549,235,711.52/68,752.72
  6. Step 6: Final answer
    x = 80,712.96

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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.