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Finding the Fourth Proportional to 86,251.26, 129,376.88 and 23,921.76

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Solution

The fourth proportional to 86,251.26, 129,376.88 and 23,921.76 is: 35,882.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,251.26 : 129,376.88 = 23,921.76 : x
  2. Step 2: Convert to fraction form
    86,251.26/129,376.88 = 23,921.76/x
  3. Step 3: Cross multiply
    86,251.26x = 129,376.88 × 23,921.76
  4. Step 4: Simplify right side
    86,251.26x = 3,094,922,672.91
  5. Step 5: Solve for x
    x = 3,094,922,672.91/86,251.26
  6. Step 6: Final answer
    x = 35,882.64

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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.