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Finding the Fourth Proportional to 99,469.62, 137,310.57 and 59,187.15

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Solution

The fourth proportional to 99,469.62, 137,310.57 and 59,187.15 is: 81,703.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,469.62 : 137,310.57 = 59,187.15 : x
  2. Step 2: Convert to fraction form
    99,469.62/137,310.57 = 59,187.15/x
  3. Step 3: Cross multiply
    99,469.62x = 137,310.57 × 59,187.15
  4. Step 4: Simplify right side
    99,469.62x = 8,127,021,303.18
  5. Step 5: Solve for x
    x = 8,127,021,303.18/99,469.62
  6. Step 6: Final answer
    x = 81,703.55

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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.