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Finding the Fourth Proportional to 438,953.64, 605,805.19 and 247,979.33

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Solution

The fourth proportional to 438,953.64, 605,805.19 and 247,979.33 is: 342,239.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,953.64 : 605,805.19 = 247,979.33 : x
  2. Step 2: Convert to fraction form
    438,953.64/605,805.19 = 247,979.33/x
  3. Step 3: Cross multiply
    438,953.64x = 605,805.19 × 247,979.33
  4. Step 4: Simplify right side
    438,953.64x = 150,227,163,886.83
  5. Step 5: Solve for x
    x = 150,227,163,886.83/438,953.64
  6. Step 6: Final answer
    x = 342,239.25

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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.