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Finding the Fourth Proportional to 202,316.87, 279,197.29 and 111,672.85

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Solution

The fourth proportional to 202,316.87, 279,197.29 and 111,672.85 is: 154,108.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,316.87 : 279,197.29 = 111,672.85 : x
  2. Step 2: Convert to fraction form
    202,316.87/279,197.29 = 111,672.85/x
  3. Step 3: Cross multiply
    202,316.87x = 279,197.29 × 111,672.85
  4. Step 4: Simplify right side
    202,316.87x = 31,178,758,273.16
  5. Step 5: Solve for x
    x = 31,178,758,273.16/202,316.87
  6. Step 6: Final answer
    x = 154,108.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.