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Finding the Fourth Proportional to 95,472.96, 143,496.72 and 78,938.88

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Solution

The fourth proportional to 95,472.96, 143,496.72 and 78,938.88 is: 118,645.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,472.96 : 143,496.72 = 78,938.88 : x
  2. Step 2: Convert to fraction form
    95,472.96/143,496.72 = 78,938.88/x
  3. Step 3: Cross multiply
    95,472.96x = 143,496.72 × 78,938.88
  4. Step 4: Simplify right side
    95,472.96x = 11,327,470,360.47
  5. Step 5: Solve for x
    x = 11,327,470,360.47/95,472.96
  6. Step 6: Final answer
    x = 118,645.85

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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.