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Finding the Fourth Proportional to 127,896.60, 191,836.74 and 39,143.04

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Solution

The fourth proportional to 127,896.60, 191,836.74 and 39,143.04 is: 58,712.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,896.60 : 191,836.74 = 39,143.04 : x
  2. Step 2: Convert to fraction form
    127,896.60/191,836.74 = 39,143.04/x
  3. Step 3: Cross multiply
    127,896.60x = 191,836.74 × 39,143.04
  4. Step 4: Simplify right side
    127,896.60x = 7,509,073,187.29
  5. Step 5: Solve for x
    x = 7,509,073,187.29/127,896.60
  6. Step 6: Final answer
    x = 58,712.06

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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.