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Finding the Fourth Proportional to 8,706.61, 13,062.08 and 2,550.61

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Solution

The fourth proportional to 8,706.61, 13,062.08 and 2,550.61 is: 3,826.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.61 : 13,062.08 = 2,550.61 : x
  2. Step 2: Convert to fraction form
    8,706.61/13,062.08 = 2,550.61/x
  3. Step 3: Cross multiply
    8,706.61x = 13,062.08 × 2,550.61
  4. Step 4: Simplify right side
    8,706.61x = 33,316,271.87
  5. Step 5: Solve for x
    x = 33,316,271.87/8,706.61
  6. Step 6: Final answer
    x = 3,826.55

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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.