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Finding the Fourth Proportional to 63,713.20, 95,581.89 and 21,021.22

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Solution

The fourth proportional to 63,713.20, 95,581.89 and 21,021.22 is: 31,535.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,713.20 : 95,581.89 = 21,021.22 : x
  2. Step 2: Convert to fraction form
    63,713.20/95,581.89 = 21,021.22/x
  3. Step 3: Cross multiply
    63,713.20x = 95,581.89 × 21,021.22
  4. Step 4: Simplify right side
    63,713.20x = 2,009,247,937.71
  5. Step 5: Solve for x
    x = 2,009,247,937.71/63,713.20
  6. Step 6: Final answer
    x = 31,535.82

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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.