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Finding the Fourth Proportional to 115,921.70, 173,764.90 and 65,898.42

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Solution

The fourth proportional to 115,921.70, 173,764.90 and 65,898.42 is: 98,780.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,921.70 : 173,764.90 = 65,898.42 : x
  2. Step 2: Convert to fraction form
    115,921.70/173,764.90 = 65,898.42/x
  3. Step 3: Cross multiply
    115,921.70x = 173,764.90 × 65,898.42
  4. Step 4: Simplify right side
    115,921.70x = 11,450,833,095.45
  5. Step 5: Solve for x
    x = 11,450,833,095.45/115,921.70
  6. Step 6: Final answer
    x = 98,780.76

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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.