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Finding the Fourth Proportional to 111,916.70, 167,769.51 and 55,703.66

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Solution

The fourth proportional to 111,916.70, 167,769.51 and 55,703.66 is: 83,502.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,916.70 : 167,769.51 = 55,703.66 : x
  2. Step 2: Convert to fraction form
    111,916.70/167,769.51 = 55,703.66/x
  3. Step 3: Cross multiply
    111,916.70x = 167,769.51 × 55,703.66
  4. Step 4: Simplify right side
    111,916.70x = 9,345,375,323.98
  5. Step 5: Solve for x
    x = 9,345,375,323.98/111,916.70
  6. Step 6: Final answer
    x = 83,502.96

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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.