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Finding the Fourth Proportional to 85,300.72, 127,947.38 and 29,145.84

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Solution

The fourth proportional to 85,300.72, 127,947.38 and 29,145.84 is: 43,717.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,300.72 : 127,947.38 = 29,145.84 : x
  2. Step 2: Convert to fraction form
    85,300.72/127,947.38 = 29,145.84/x
  3. Step 3: Cross multiply
    85,300.72x = 127,947.38 × 29,145.84
  4. Step 4: Simplify right side
    85,300.72x = 3,729,133,865.90
  5. Step 5: Solve for x
    x = 3,729,133,865.90/85,300.72
  6. Step 6: Final answer
    x = 43,717.50

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.