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Finding the Fourth Proportional to 310,821.20, 466,231.80 and 248,613.20

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Solution

The fourth proportional to 310,821.20, 466,231.80 and 248,613.20 is: 372,919.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,821.20 : 466,231.80 = 248,613.20 : x
  2. Step 2: Convert to fraction form
    310,821.20/466,231.80 = 248,613.20/x
  3. Step 3: Cross multiply
    310,821.20x = 466,231.80 × 248,613.20
  4. Step 4: Simplify right side
    310,821.20x = 115,911,379,739.76
  5. Step 5: Solve for x
    x = 115,911,379,739.76/310,821.20
  6. Step 6: Final answer
    x = 372,919.80

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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.