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Finding the Fourth Proportional to 8,868.74, 12,236.74 and 5,039.53

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Solution

The fourth proportional to 8,868.74, 12,236.74 and 5,039.53 is: 6,953.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,868.74 : 12,236.74 = 5,039.53 : x
  2. Step 2: Convert to fraction form
    8,868.74/12,236.74 = 5,039.53/x
  3. Step 3: Cross multiply
    8,868.74x = 12,236.74 × 5,039.53
  4. Step 4: Simplify right side
    8,868.74x = 61,667,375.14
  5. Step 5: Solve for x
    x = 61,667,375.14/8,868.74
  6. Step 6: Final answer
    x = 6,953.35

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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.