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Finding the Fourth Proportional to 99,645.96, 137,512.98 and 54,933.96

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Solution

The fourth proportional to 99,645.96, 137,512.98 and 54,933.96 is: 75,809.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,645.96 : 137,512.98 = 54,933.96 : x
  2. Step 2: Convert to fraction form
    99,645.96/137,512.98 = 54,933.96/x
  3. Step 3: Cross multiply
    99,645.96x = 137,512.98 × 54,933.96
  4. Step 4: Simplify right side
    99,645.96x = 7,554,132,542.80
  5. Step 5: Solve for x
    x = 7,554,132,542.80/99,645.96
  6. Step 6: Final answer
    x = 75,809.72

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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.