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Finding the Fourth Proportional to 86,591.57, 129,786.50 and 36,655.07

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Solution

The fourth proportional to 86,591.57, 129,786.50 and 36,655.07 is: 54,939.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,591.57 : 129,786.50 = 36,655.07 : x
  2. Step 2: Convert to fraction form
    86,591.57/129,786.50 = 36,655.07/x
  3. Step 3: Cross multiply
    86,591.57x = 129,786.50 × 36,655.07
  4. Step 4: Simplify right side
    86,591.57x = 4,757,332,685.26
  5. Step 5: Solve for x
    x = 4,757,332,685.26/86,591.57
  6. Step 6: Final answer
    x = 54,939.91

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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.