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Finding the Fourth Proportional to 86,599.75, 129,903.41 and 27,439.78

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Solution

The fourth proportional to 86,599.75, 129,903.41 and 27,439.78 is: 41,160.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,599.75 : 129,903.41 = 27,439.78 : x
  2. Step 2: Convert to fraction form
    86,599.75/129,903.41 = 27,439.78/x
  3. Step 3: Cross multiply
    86,599.75x = 129,903.41 × 27,439.78
  4. Step 4: Simplify right side
    86,599.75x = 3,564,520,991.65
  5. Step 5: Solve for x
    x = 3,564,520,991.65/86,599.75
  6. Step 6: Final answer
    x = 41,160.87

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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.