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Finding the Fourth Proportional to 127,954.80, 191,932.20 and 98,430.30

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Solution

The fourth proportional to 127,954.80, 191,932.20 and 98,430.30 is: 147,645.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,954.80 : 191,932.20 = 98,430.30 : x
  2. Step 2: Convert to fraction form
    127,954.80/191,932.20 = 98,430.30/x
  3. Step 3: Cross multiply
    127,954.80x = 191,932.20 × 98,430.30
  4. Step 4: Simplify right side
    127,954.80x = 18,891,944,025.66
  5. Step 5: Solve for x
    x = 18,891,944,025.66/127,954.80
  6. Step 6: Final answer
    x = 147,645.45

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Similar ratio
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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.