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Finding the Fourth Proportional to 31,958.20, 44,101.70 and 18,530.70

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Solution

The fourth proportional to 31,958.20, 44,101.70 and 18,530.70 is: 25,572.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,958.20 : 44,101.70 = 18,530.70 : x
  2. Step 2: Convert to fraction form
    31,958.20/44,101.70 = 18,530.70/x
  3. Step 3: Cross multiply
    31,958.20x = 44,101.70 × 18,530.70
  4. Step 4: Simplify right side
    31,958.20x = 817,235,372.19
  5. Step 5: Solve for x
    x = 817,235,372.19/31,958.20
  6. Step 6: Final answer
    x = 25,572.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.