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Finding the Fourth Proportional to 493,708.80, 681,320.64 and 267,355.20

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Solution

The fourth proportional to 493,708.80, 681,320.64 and 267,355.20 is: 368,951.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,708.80 : 681,320.64 = 267,355.20 : x
  2. Step 2: Convert to fraction form
    493,708.80/681,320.64 = 267,355.20/x
  3. Step 3: Cross multiply
    493,708.80x = 681,320.64 × 267,355.20
  4. Step 4: Simplify right side
    493,708.80x = 182,154,615,971.33
  5. Step 5: Solve for x
    x = 182,154,615,971.33/493,708.80
  6. Step 6: Final answer
    x = 368,951.53

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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.