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Finding the Fourth Proportional to 109,780.89, 151,497.64 and 59,479.89

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Solution

The fourth proportional to 109,780.89, 151,497.64 and 59,479.89 is: 82,082.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,780.89 : 151,497.64 = 59,479.89 : x
  2. Step 2: Convert to fraction form
    109,780.89/151,497.64 = 59,479.89/x
  3. Step 3: Cross multiply
    109,780.89x = 151,497.64 × 59,479.89
  4. Step 4: Simplify right side
    109,780.89x = 9,011,062,962.46
  5. Step 5: Solve for x
    x = 9,011,062,962.46/109,780.89
  6. Step 6: Final answer
    x = 82,082.25

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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.