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Finding the Fourth Proportional to 438,953.70, 605,805.27 and 247,979.40

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Solution

The fourth proportional to 438,953.70, 605,805.27 and 247,979.40 is: 342,239.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,953.70 : 605,805.27 = 247,979.40 : x
  2. Step 2: Convert to fraction form
    438,953.70/605,805.27 = 247,979.40/x
  3. Step 3: Cross multiply
    438,953.70x = 605,805.27 × 247,979.40
  4. Step 4: Simplify right side
    438,953.70x = 150,227,227,371.44
  5. Step 5: Solve for x
    x = 150,227,227,371.44/438,953.70
  6. Step 6: Final answer
    x = 342,239.35

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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.