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Finding the Fourth Proportional to 186,589.90, 257,290.57 and 126,055.43

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Solution

The fourth proportional to 186,589.90, 257,290.57 and 126,055.43 is: 173,819.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,589.90 : 257,290.57 = 126,055.43 : x
  2. Step 2: Convert to fraction form
    186,589.90/257,290.57 = 126,055.43/x
  3. Step 3: Cross multiply
    186,589.90x = 257,290.57 × 126,055.43
  4. Step 4: Simplify right side
    186,589.90x = 32,432,873,436.30
  5. Step 5: Solve for x
    x = 32,432,873,436.30/186,589.90
  6. Step 6: Final answer
    x = 173,819.02

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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.