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Finding the Fourth Proportional to 127,618.92, 191,471.01 and 56,531.90

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Solution

The fourth proportional to 127,618.92, 191,471.01 and 56,531.90 is: 84,816.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,618.92 : 191,471.01 = 56,531.90 : x
  2. Step 2: Convert to fraction form
    127,618.92/191,471.01 = 56,531.90/x
  3. Step 3: Cross multiply
    127,618.92x = 191,471.01 × 56,531.90
  4. Step 4: Simplify right side
    127,618.92x = 10,824,219,707.56
  5. Step 5: Solve for x
    x = 10,824,219,707.56/127,618.92
  6. Step 6: Final answer
    x = 84,816.73

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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.