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Finding the Fourth Proportional to 616,151.20, 924,226.80 and 172,919.20

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Solution

The fourth proportional to 616,151.20, 924,226.80 and 172,919.20 is: 259,378.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,151.20 : 924,226.80 = 172,919.20 : x
  2. Step 2: Convert to fraction form
    616,151.20/924,226.80 = 172,919.20/x
  3. Step 3: Cross multiply
    616,151.20x = 924,226.80 × 172,919.20
  4. Step 4: Simplify right side
    616,151.20x = 159,816,558,874.56
  5. Step 5: Solve for x
    x = 159,816,558,874.56/616,151.20
  6. Step 6: Final answer
    x = 259,378.80

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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.