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Finding the Fourth Proportional to 265,980.33, 398,759.90 and 132,787.17

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Solution

The fourth proportional to 265,980.33, 398,759.90 and 132,787.17 is: 199,075.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,980.33 : 398,759.90 = 132,787.17 : x
  2. Step 2: Convert to fraction form
    265,980.33/398,759.90 = 132,787.17/x
  3. Step 3: Cross multiply
    265,980.33x = 398,759.90 × 132,787.17
  4. Step 4: Simplify right side
    265,980.33x = 52,950,197,966.55
  5. Step 5: Solve for x
    x = 52,950,197,966.55/265,980.33
  6. Step 6: Final answer
    x = 199,075.62

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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.