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Finding the Fourth Proportional to 438,400.70, 605,001.03 and 247,377.23

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Solution

The fourth proportional to 438,400.70, 605,001.03 and 247,377.23 is: 341,385.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,400.70 : 605,001.03 = 247,377.23 : x
  2. Step 2: Convert to fraction form
    438,400.70/605,001.03 = 247,377.23/x
  3. Step 3: Cross multiply
    438,400.70x = 605,001.03 × 247,377.23
  4. Step 4: Simplify right side
    438,400.70x = 149,663,478,948.55
  5. Step 5: Solve for x
    x = 149,663,478,948.55/438,400.70
  6. Step 6: Final answer
    x = 341,385.13

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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.