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Finding the Fourth Proportional to 202,235.87, 279,085.17 and 111,591.76

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Solution

The fourth proportional to 202,235.87, 279,085.17 and 111,591.76 is: 153,996.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,235.87 : 279,085.17 = 111,591.76 : x
  2. Step 2: Convert to fraction form
    202,235.87/279,085.17 = 111,591.76/x
  3. Step 3: Cross multiply
    202,235.87x = 279,085.17 × 111,591.76
  4. Step 4: Simplify right side
    202,235.87x = 31,143,604,926.54
  5. Step 5: Solve for x
    x = 31,143,604,926.54/202,235.87
  6. Step 6: Final answer
    x = 153,996.45

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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.