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Finding the Fourth Proportional to 127,651.67, 191,505.95 and 38,912.07

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Solution

The fourth proportional to 127,651.67, 191,505.95 and 38,912.07 is: 58,376.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,651.67 : 191,505.95 = 38,912.07 : x
  2. Step 2: Convert to fraction form
    127,651.67/191,505.95 = 38,912.07/x
  3. Step 3: Cross multiply
    127,651.67x = 191,505.95 × 38,912.07
  4. Step 4: Simplify right side
    127,651.67x = 7,451,892,737.26
  5. Step 5: Solve for x
    x = 7,451,892,737.26/127,651.67
  6. Step 6: Final answer
    x = 58,376.78

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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.