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Finding the Fourth Proportional to 67,694.45, 101,557.89 and 20,947.32

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Solution

The fourth proportional to 67,694.45, 101,557.89 and 20,947.32 is: 31,426.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,694.45 : 101,557.89 = 20,947.32 : x
  2. Step 2: Convert to fraction form
    67,694.45/101,557.89 = 20,947.32/x
  3. Step 3: Cross multiply
    67,694.45x = 101,557.89 × 20,947.32
  4. Step 4: Simplify right side
    67,694.45x = 2,127,365,620.35
  5. Step 5: Solve for x
    x = 2,127,365,620.35/67,694.45
  6. Step 6: Final answer
    x = 31,426.00

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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.