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Finding the Fourth Proportional to 265,699.12, 398,621.60 and 132,418.48

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Solution

The fourth proportional to 265,699.12, 398,621.60 and 132,418.48 is: 198,664.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,699.12 : 398,621.60 = 132,418.48 : x
  2. Step 2: Convert to fraction form
    265,699.12/398,621.60 = 132,418.48/x
  3. Step 3: Cross multiply
    265,699.12x = 398,621.60 × 132,418.48
  4. Step 4: Simplify right side
    265,699.12x = 52,784,866,367.17
  5. Step 5: Solve for x
    x = 52,784,866,367.17/265,699.12
  6. Step 6: Final answer
    x = 198,664.06

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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.