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Finding the Fourth Proportional to 86,209.60, 129,314.16 and 27,045.52

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Solution

The fourth proportional to 86,209.60, 129,314.16 and 27,045.52 is: 40,568.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,209.60 : 129,314.16 = 27,045.52 : x
  2. Step 2: Convert to fraction form
    86,209.60/129,314.16 = 27,045.52/x
  3. Step 3: Cross multiply
    86,209.60x = 129,314.16 × 27,045.52
  4. Step 4: Simplify right side
    86,209.60x = 3,497,368,700.56
  5. Step 5: Solve for x
    x = 3,497,368,700.56/86,209.60
  6. Step 6: Final answer
    x = 40,568.20

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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.