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Finding the Fourth Proportional to 99,479.99, 137,261.10 and 59,185.88

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Solution

The fourth proportional to 99,479.99, 137,261.10 and 59,185.88 is: 81,663.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,479.99 : 137,261.10 = 59,185.88 : x
  2. Step 2: Convert to fraction form
    99,479.99/137,261.10 = 59,185.88/x
  3. Step 3: Cross multiply
    99,479.99x = 137,261.10 × 59,185.88
  4. Step 4: Simplify right side
    99,479.99x = 8,123,918,306.96
  5. Step 5: Solve for x
    x = 8,123,918,306.96/99,479.99
  6. Step 6: Final answer
    x = 81,663.85

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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.