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Finding the Fourth Proportional to 56,908.20, 85,410.90 and 25,366.80

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Solution

The fourth proportional to 56,908.20, 85,410.90 and 25,366.80 is: 38,071.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,908.20 : 85,410.90 = 25,366.80 : x
  2. Step 2: Convert to fraction form
    56,908.20/85,410.90 = 25,366.80/x
  3. Step 3: Cross multiply
    56,908.20x = 85,410.90 × 25,366.80
  4. Step 4: Simplify right side
    56,908.20x = 2,166,601,218.12
  5. Step 5: Solve for x
    x = 2,166,601,218.12/56,908.20
  6. Step 6: Final answer
    x = 38,071.86

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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.