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Finding the Fourth Proportional to 438,781, 605,517.78 and 237,577

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Solution

The fourth proportional to 438,781, 605,517.78 and 237,577 is: 327,856.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,781 : 605,517.78 = 237,577 : x
  2. Step 2: Convert to fraction form
    438,781/605,517.78 = 237,577/x
  3. Step 3: Cross multiply
    438,781x = 605,517.78 × 237,577
  4. Step 4: Simplify right side
    438,781x = 143,857,097,619.06
  5. Step 5: Solve for x
    x = 143,857,097,619.06/438,781
  6. Step 6: Final answer
    x = 327,856.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.