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Finding the Fourth Proportional to 127,393.80, 191,177.10 and 82,912.20

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Solution

The fourth proportional to 127,393.80, 191,177.10 and 82,912.20 is: 124,424.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,393.80 : 191,177.10 = 82,912.20 : x
  2. Step 2: Convert to fraction form
    127,393.80/191,177.10 = 82,912.20/x
  3. Step 3: Cross multiply
    127,393.80x = 191,177.10 × 82,912.20
  4. Step 4: Simplify right side
    127,393.80x = 15,850,913,950.62
  5. Step 5: Solve for x
    x = 15,850,913,950.62/127,393.80
  6. Step 6: Final answer
    x = 124,424.53

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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.