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Finding the Fourth Proportional to 186,877.20, 279,659.70 and 127,828.20

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Solution

The fourth proportional to 186,877.20, 279,659.70 and 127,828.20 is: 191,293.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,877.20 : 279,659.70 = 127,828.20 : x
  2. Step 2: Convert to fraction form
    186,877.20/279,659.70 = 127,828.20/x
  3. Step 3: Cross multiply
    186,877.20x = 279,659.70 × 127,828.20
  4. Step 4: Simplify right side
    186,877.20x = 35,748,396,063.54
  5. Step 5: Solve for x
    x = 35,748,396,063.54/186,877.20
  6. Step 6: Final answer
    x = 191,293.51

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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.