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Finding the Fourth Proportional to 317,402.96, 476,102.28 and 80,743.52

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Solution

The fourth proportional to 317,402.96, 476,102.28 and 80,743.52 is: 121,114.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,402.96 : 476,102.28 = 80,743.52 : x
  2. Step 2: Convert to fraction form
    317,402.96/476,102.28 = 80,743.52/x
  3. Step 3: Cross multiply
    317,402.96x = 476,102.28 × 80,743.52
  4. Step 4: Simplify right side
    317,402.96x = 38,442,173,967.23
  5. Step 5: Solve for x
    x = 38,442,173,967.23/317,402.96
  6. Step 6: Final answer
    x = 121,114.73

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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.