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Finding the Fourth Proportional to 186,540.60, 279,708.30 and 127,443

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Solution

The fourth proportional to 186,540.60, 279,708.30 and 127,443 is: 191,094.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,540.60 : 279,708.30 = 127,443 : x
  2. Step 2: Convert to fraction form
    186,540.60/279,708.30 = 127,443/x
  3. Step 3: Cross multiply
    186,540.60x = 279,708.30 × 127,443
  4. Step 4: Simplify right side
    186,540.60x = 35,646,864,876.90
  5. Step 5: Solve for x
    x = 35,646,864,876.90/186,540.60
  6. Step 6: Final answer
    x = 191,094.40

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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.