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Finding the Fourth Proportional to 57,723.80, 86,585.70 and 55,536.80

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Solution

The fourth proportional to 57,723.80, 86,585.70 and 55,536.80 is: 83,305.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,723.80 : 86,585.70 = 55,536.80 : x
  2. Step 2: Convert to fraction form
    57,723.80/86,585.70 = 55,536.80/x
  3. Step 3: Cross multiply
    57,723.80x = 86,585.70 × 55,536.80
  4. Step 4: Simplify right side
    57,723.80x = 4,808,692,703.76
  5. Step 5: Solve for x
    x = 4,808,692,703.76/57,723.80
  6. Step 6: Final answer
    x = 83,305.20

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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.