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Finding the Fourth Proportional to 57,656.88, 86,519.88 and 20,723.76

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Solution

The fourth proportional to 57,656.88, 86,519.88 and 20,723.76 is: 31,098.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,656.88 : 86,519.88 = 20,723.76 : x
  2. Step 2: Convert to fraction form
    57,656.88/86,519.88 = 20,723.76/x
  3. Step 3: Cross multiply
    57,656.88x = 86,519.88 × 20,723.76
  4. Step 4: Simplify right side
    57,656.88x = 1,793,017,228.35
  5. Step 5: Solve for x
    x = 1,793,017,228.35/57,656.88
  6. Step 6: Final answer
    x = 31,098.06

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1.5x scale

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.