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Finding the Fourth Proportional to 8,706.18, 13,047.54 and 4,751.49

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Solution

The fourth proportional to 8,706.18, 13,047.54 and 4,751.49 is: 7,120.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.18 : 13,047.54 = 4,751.49 : x
  2. Step 2: Convert to fraction form
    8,706.18/13,047.54 = 4,751.49/x
  3. Step 3: Cross multiply
    8,706.18x = 13,047.54 × 4,751.49
  4. Step 4: Simplify right side
    8,706.18x = 61,995,255.83
  5. Step 5: Solve for x
    x = 61,995,255.83/8,706.18
  6. Step 6: Final answer
    x = 7,120.83

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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.