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Finding the Fourth Proportional to 91,248.80, 136,898.80 and 44,503.20

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Solution

The fourth proportional to 91,248.80, 136,898.80 and 44,503.20 is: 66,767.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,248.80 : 136,898.80 = 44,503.20 : x
  2. Step 2: Convert to fraction form
    91,248.80/136,898.80 = 44,503.20/x
  3. Step 3: Cross multiply
    91,248.80x = 136,898.80 × 44,503.20
  4. Step 4: Simplify right side
    91,248.80x = 6,092,434,676.16
  5. Step 5: Solve for x
    x = 6,092,434,676.16/91,248.80
  6. Step 6: Final answer
    x = 66,767.29

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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.