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Finding the Fourth Proportional to 186,486.88, 257,447.20 and 126,375.12

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Solution

The fourth proportional to 186,486.88, 257,447.20 and 126,375.12 is: 174,462.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,486.88 : 257,447.20 = 126,375.12 : x
  2. Step 2: Convert to fraction form
    186,486.88/257,447.20 = 126,375.12/x
  3. Step 3: Cross multiply
    186,486.88x = 257,447.20 × 126,375.12
  4. Step 4: Simplify right side
    186,486.88x = 32,534,920,793.66
  5. Step 5: Solve for x
    x = 32,534,920,793.66/186,486.88
  6. Step 6: Final answer
    x = 174,462.25

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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.