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Finding the Fourth Proportional to 8,881.38, 12,255.66 and 5,103.72

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Solution

The fourth proportional to 8,881.38, 12,255.66 and 5,103.72 is: 7,042.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,881.38 : 12,255.66 = 5,103.72 : x
  2. Step 2: Convert to fraction form
    8,881.38/12,255.66 = 5,103.72/x
  3. Step 3: Cross multiply
    8,881.38x = 12,255.66 × 5,103.72
  4. Step 4: Simplify right side
    8,881.38x = 62,549,457.06
  5. Step 5: Solve for x
    x = 62,549,457.06/8,881.38
  6. Step 6: Final answer
    x = 7,042.76

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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.