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Finding the Fourth Proportional to 418,433.67, 627,267.78 and 181,690.92

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Solution

The fourth proportional to 418,433.67, 627,267.78 and 181,690.92 is: 272,370.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,433.67 : 627,267.78 = 181,690.92 : x
  2. Step 2: Convert to fraction form
    418,433.67/627,267.78 = 181,690.92/x
  3. Step 3: Cross multiply
    418,433.67x = 627,267.78 × 181,690.92
  4. Step 4: Simplify right side
    418,433.67x = 113,968,860,034.56
  5. Step 5: Solve for x
    x = 113,968,860,034.56/418,433.67
  6. Step 6: Final answer
    x = 272,370.19

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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.