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Finding the Fourth Proportional to 482,899.80, 724,317.30 and 127,906.20

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Solution

The fourth proportional to 482,899.80, 724,317.30 and 127,906.20 is: 191,850.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,899.80 : 724,317.30 = 127,906.20 : x
  2. Step 2: Convert to fraction form
    482,899.80/724,317.30 = 127,906.20/x
  3. Step 3: Cross multiply
    482,899.80x = 724,317.30 × 127,906.20
  4. Step 4: Simplify right side
    482,899.80x = 92,644,673,437.26
  5. Step 5: Solve for x
    x = 92,644,673,437.26/482,899.80
  6. Step 6: Final answer
    x = 191,850.72

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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.