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Finding the Fourth Proportional to 8,763.98, 12,092.13 and 5,179.02

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Solution

The fourth proportional to 8,763.98, 12,092.13 and 5,179.02 is: 7,145.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,763.98 : 12,092.13 = 5,179.02 : x
  2. Step 2: Convert to fraction form
    8,763.98/12,092.13 = 5,179.02/x
  3. Step 3: Cross multiply
    8,763.98x = 12,092.13 × 5,179.02
  4. Step 4: Simplify right side
    8,763.98x = 62,625,383.11
  5. Step 5: Solve for x
    x = 62,625,383.11/8,763.98
  6. Step 6: Final answer
    x = 7,145.77

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1.5x scale

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.