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Finding the Fourth Proportional to 86,171.60, 129,257.16 and 27,007.52

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Solution

The fourth proportional to 86,171.60, 129,257.16 and 27,007.52 is: 40,511.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,171.60 : 129,257.16 = 27,007.52 : x
  2. Step 2: Convert to fraction form
    86,171.60/129,257.16 = 27,007.52/x
  3. Step 3: Cross multiply
    86,171.60x = 129,257.16 × 27,007.52
  4. Step 4: Simplify right side
    86,171.60x = 3,490,915,333.84
  5. Step 5: Solve for x
    x = 3,490,915,333.84/86,171.60
  6. Step 6: Final answer
    x = 40,511.20

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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.