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Finding the Fourth Proportional to 99,267.54, 137,021.13 and 63,553.74

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Solution

The fourth proportional to 99,267.54, 137,021.13 and 63,553.74 is: 87,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,267.54 : 137,021.13 = 63,553.74 : x
  2. Step 2: Convert to fraction form
    99,267.54/137,021.13 = 63,553.74/x
  3. Step 3: Cross multiply
    99,267.54x = 137,021.13 × 63,553.74
  4. Step 4: Simplify right side
    99,267.54x = 8,708,205,270.53
  5. Step 5: Solve for x
    x = 8,708,205,270.53/99,267.54
  6. Step 6: Final answer
    x = 87,724.60

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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.