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Finding the Fourth Proportional to 10,695.15, 14,759.42 and 5,979.38

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Solution

The fourth proportional to 10,695.15, 14,759.42 and 5,979.38 is: 8,251.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,695.15 : 14,759.42 = 5,979.38 : x
  2. Step 2: Convert to fraction form
    10,695.15/14,759.42 = 5,979.38/x
  3. Step 3: Cross multiply
    10,695.15x = 14,759.42 × 5,979.38
  4. Step 4: Simplify right side
    10,695.15x = 88,252,077.07
  5. Step 5: Solve for x
    x = 88,252,077.07/10,695.15
  6. Step 6: Final answer
    x = 8,251.60

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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.