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Finding the Fourth Proportional to 85,996.28, 128,862.90 and 36,049.14

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Solution

The fourth proportional to 85,996.28, 128,862.90 and 36,049.14 is: 54,018.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,996.28 : 128,862.90 = 36,049.14 : x
  2. Step 2: Convert to fraction form
    85,996.28/128,862.90 = 36,049.14/x
  3. Step 3: Cross multiply
    85,996.28x = 128,862.90 × 36,049.14
  4. Step 4: Simplify right side
    85,996.28x = 4,645,396,722.91
  5. Step 5: Solve for x
    x = 4,645,396,722.91/85,996.28
  6. Step 6: Final answer
    x = 54,018.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.