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Finding the Fourth Proportional to 109,780.76, 151,497.47 and 59,479.76

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Solution

The fourth proportional to 109,780.76, 151,497.47 and 59,479.76 is: 82,082.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,780.76 : 151,497.47 = 59,479.76 : x
  2. Step 2: Convert to fraction form
    109,780.76/151,497.47 = 59,479.76/x
  3. Step 3: Cross multiply
    109,780.76x = 151,497.47 × 59,479.76
  4. Step 4: Simplify right side
    109,780.76x = 9,011,033,156.21
  5. Step 5: Solve for x
    x = 9,011,033,156.21/109,780.76
  6. Step 6: Final answer
    x = 82,082.08

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1.5x scale

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.