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Finding the Fourth Proportional to 265,763.79, 398,436.39 and 132,575.49

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Solution

The fourth proportional to 265,763.79, 398,436.39 and 132,575.49 is: 198,758.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,763.79 : 398,436.39 = 132,575.49 : x
  2. Step 2: Convert to fraction form
    265,763.79/398,436.39 = 132,575.49/x
  3. Step 3: Cross multiply
    265,763.79x = 398,436.39 × 132,575.49
  4. Step 4: Simplify right side
    265,763.79x = 52,822,899,638.08
  5. Step 5: Solve for x
    x = 52,822,899,638.08/265,763.79
  6. Step 6: Final answer
    x = 198,758.83

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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.