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Finding the Fourth Proportional to 91,788.80, 137,694.13 and 32,630.45

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Solution

The fourth proportional to 91,788.80, 137,694.13 and 32,630.45 is: 48,949.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,788.80 : 137,694.13 = 32,630.45 : x
  2. Step 2: Convert to fraction form
    91,788.80/137,694.13 = 32,630.45/x
  3. Step 3: Cross multiply
    91,788.80x = 137,694.13 × 32,630.45
  4. Step 4: Simplify right side
    91,788.80x = 4,493,020,654.21
  5. Step 5: Solve for x
    x = 4,493,020,654.21/91,788.80
  6. Step 6: Final answer
    x = 48,949.55

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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.