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Finding the Fourth Proportional to 363,412.72, 544,921.24 and 126,691.76

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Solution

The fourth proportional to 363,412.72, 544,921.24 and 126,691.76 is: 189,968.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,412.72 : 544,921.24 = 126,691.76 : x
  2. Step 2: Convert to fraction form
    363,412.72/544,921.24 = 126,691.76/x
  3. Step 3: Cross multiply
    363,412.72x = 544,921.24 × 126,691.76
  4. Step 4: Simplify right side
    363,412.72x = 69,037,030,956.98
  5. Step 5: Solve for x
    x = 69,037,030,956.98/363,412.72
  6. Step 6: Final answer
    x = 189,968.67

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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.