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Finding the Fourth Proportional to 327,620.40, 491,430.60 and 127,947.30

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Solution

The fourth proportional to 327,620.40, 491,430.60 and 127,947.30 is: 191,920.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,620.40 : 491,430.60 = 127,947.30 : x
  2. Step 2: Convert to fraction form
    327,620.40/491,430.60 = 127,947.30/x
  3. Step 3: Cross multiply
    327,620.40x = 491,430.60 × 127,947.30
  4. Step 4: Simplify right side
    327,620.40x = 62,877,218,407.38
  5. Step 5: Solve for x
    x = 62,877,218,407.38/327,620.40
  6. Step 6: Final answer
    x = 191,920.95

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1.5x scale

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.