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Finding the Fourth Proportional to 115,443.70, 173,165.55 and 92,115.70

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Solution

The fourth proportional to 115,443.70, 173,165.55 and 92,115.70 is: 138,173.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,443.70 : 173,165.55 = 92,115.70 : x
  2. Step 2: Convert to fraction form
    115,443.70/173,165.55 = 92,115.70/x
  3. Step 3: Cross multiply
    115,443.70x = 173,165.55 × 92,115.70
  4. Step 4: Simplify right side
    115,443.70x = 15,951,265,854.14
  5. Step 5: Solve for x
    x = 15,951,265,854.14/115,443.70
  6. Step 6: Final answer
    x = 138,173.55

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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.