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Finding the Fourth Proportional to 265,781.52, 398,739.60 and 88,289.44

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Solution

The fourth proportional to 265,781.52, 398,739.60 and 88,289.44 is: 132,456.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,781.52 : 398,739.60 = 88,289.44 : x
  2. Step 2: Convert to fraction form
    265,781.52/398,739.60 = 88,289.44/x
  3. Step 3: Cross multiply
    265,781.52x = 398,739.60 × 88,289.44
  4. Step 4: Simplify right side
    265,781.52x = 35,204,495,989.82
  5. Step 5: Solve for x
    x = 35,204,495,989.82/265,781.52
  6. Step 6: Final answer
    x = 132,456.52

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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.