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Finding the Fourth Proportional to 310,927.20, 465,613.20 and 248,719.20

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Solution

The fourth proportional to 310,927.20, 465,613.20 and 248,719.20 is: 372,456.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,927.20 : 465,613.20 = 248,719.20 : x
  2. Step 2: Convert to fraction form
    310,927.20/465,613.20 = 248,719.20/x
  3. Step 3: Cross multiply
    310,927.20x = 465,613.20 × 248,719.20
  4. Step 4: Simplify right side
    310,927.20x = 115,806,942,613.44
  5. Step 5: Solve for x
    x = 115,806,942,613.44/310,927.20
  6. Step 6: Final answer
    x = 372,456.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.