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Finding the Fourth Proportional to 438,651.23, 605,304.92 and 247,683.47

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Solution

The fourth proportional to 438,651.23, 605,304.92 and 247,683.47 is: 341,784.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,651.23 : 605,304.92 = 247,683.47 : x
  2. Step 2: Convert to fraction form
    438,651.23/605,304.92 = 247,683.47/x
  3. Step 3: Cross multiply
    438,651.23x = 605,304.92 × 247,683.47
  4. Step 4: Simplify right side
    438,651.23x = 149,924,021,755.26
  5. Step 5: Solve for x
    x = 149,924,021,755.26/438,651.23
  6. Step 6: Final answer
    x = 341,784.11

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1.5x scale

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.