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Finding the Fourth Proportional to 120,691.70, 181,036.65 and 36,451.70

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Solution

The fourth proportional to 120,691.70, 181,036.65 and 36,451.70 is: 54,677.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,691.70 : 181,036.65 = 36,451.70 : x
  2. Step 2: Convert to fraction form
    120,691.70/181,036.65 = 36,451.70/x
  3. Step 3: Cross multiply
    120,691.70x = 181,036.65 × 36,451.70
  4. Step 4: Simplify right side
    120,691.70x = 6,599,093,654.81
  5. Step 5: Solve for x
    x = 6,599,093,654.81/120,691.70
  6. Step 6: Final answer
    x = 54,677.28

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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.