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Finding the Fourth Proportional to 438,586.23, 605,215.22 and 247,618.47

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Solution

The fourth proportional to 438,586.23, 605,215.22 and 247,618.47 is: 341,694.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,586.23 : 605,215.22 = 247,618.47 : x
  2. Step 2: Convert to fraction form
    438,586.23/605,215.22 = 247,618.47/x
  3. Step 3: Cross multiply
    438,586.23x = 605,215.22 × 247,618.47
  4. Step 4: Simplify right side
    438,586.23x = 149,862,465,559.02
  5. Step 5: Solve for x
    x = 149,862,465,559.02/438,586.23
  6. Step 6: Final answer
    x = 341,694.42

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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.