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Finding the Fourth Proportional to 221,494.68, 332,213.54 and 71,720.01

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Solution

The fourth proportional to 221,494.68, 332,213.54 and 71,720.01 is: 107,570.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,494.68 : 332,213.54 = 71,720.01 : x
  2. Step 2: Convert to fraction form
    221,494.68/332,213.54 = 71,720.01/x
  3. Step 3: Cross multiply
    221,494.68x = 332,213.54 × 71,720.01
  4. Step 4: Simplify right side
    221,494.68x = 23,826,358,052.34
  5. Step 5: Solve for x
    x = 23,826,358,052.34/221,494.68
  6. Step 6: Final answer
    x = 107,570.79

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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.