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Finding the Fourth Proportional to 8,707.93, 13,062.39 and 2,785.33

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Solution

The fourth proportional to 8,707.93, 13,062.39 and 2,785.33 is: 4,178.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.93 : 13,062.39 = 2,785.33 : x
  2. Step 2: Convert to fraction form
    8,707.93/13,062.39 = 2,785.33/x
  3. Step 3: Cross multiply
    8,707.93x = 13,062.39 × 2,785.33
  4. Step 4: Simplify right side
    8,707.93x = 36,383,101.80
  5. Step 5: Solve for x
    x = 36,383,101.80/8,707.93
  6. Step 6: Final answer
    x = 4,178.16

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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.