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Finding the Fourth Proportional to 317,178.36, 475,721.24 and 92,478.42

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Solution

The fourth proportional to 317,178.36, 475,721.24 and 92,478.42 is: 138,704.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,178.36 : 475,721.24 = 92,478.42 : x
  2. Step 2: Convert to fraction form
    317,178.36/475,721.24 = 92,478.42/x
  3. Step 3: Cross multiply
    317,178.36x = 475,721.24 × 92,478.42
  4. Step 4: Simplify right side
    317,178.36x = 43,993,948,173.25
  5. Step 5: Solve for x
    x = 43,993,948,173.25/317,178.36
  6. Step 6: Final answer
    x = 138,704.13

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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.