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Finding the Fourth Proportional to 247,080.48, 340,845.36 and 156,283.20

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Solution

The fourth proportional to 247,080.48, 340,845.36 and 156,283.20 is: 215,591.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,080.48 : 340,845.36 = 156,283.20 : x
  2. Step 2: Convert to fraction form
    247,080.48/340,845.36 = 156,283.20/x
  3. Step 3: Cross multiply
    247,080.48x = 340,845.36 × 156,283.20
  4. Step 4: Simplify right side
    247,080.48x = 53,268,403,565.95
  5. Step 5: Solve for x
    x = 53,268,403,565.95/247,080.48
  6. Step 6: Final answer
    x = 215,591.31

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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.