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Finding the Fourth Proportional to 418,545.15, 627,449.34 and 166,002.96

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Solution

The fourth proportional to 418,545.15, 627,449.34 and 166,002.96 is: 248,858.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,545.15 : 627,449.34 = 166,002.96 : x
  2. Step 2: Convert to fraction form
    418,545.15/627,449.34 = 166,002.96/x
  3. Step 3: Cross multiply
    418,545.15x = 627,449.34 × 166,002.96
  4. Step 4: Simplify right side
    418,545.15x = 104,158,447,690.05
  5. Step 5: Solve for x
    x = 104,158,447,690.05/418,545.15
  6. Step 6: Final answer
    x = 248,858.33

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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.