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Finding the Fourth Proportional to 475,067.40, 712,601.10 and 120,081.42

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Solution

The fourth proportional to 475,067.40, 712,601.10 and 120,081.42 is: 180,122.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,067.40 : 712,601.10 = 120,081.42 : x
  2. Step 2: Convert to fraction form
    475,067.40/712,601.10 = 120,081.42/x
  3. Step 3: Cross multiply
    475,067.40x = 712,601.10 × 120,081.42
  4. Step 4: Simplify right side
    475,067.40x = 85,570,151,981.56
  5. Step 5: Solve for x
    x = 85,570,151,981.56/475,067.40
  6. Step 6: Final answer
    x = 180,122.13

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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.