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Finding the Fourth Proportional to 10,079.06, 13,904.26 and 8,679.38

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Solution

The fourth proportional to 10,079.06, 13,904.26 and 8,679.38 is: 11,973.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,079.06 : 13,904.26 = 8,679.38 : x
  2. Step 2: Convert to fraction form
    10,079.06/13,904.26 = 8,679.38/x
  3. Step 3: Cross multiply
    10,079.06x = 13,904.26 × 8,679.38
  4. Step 4: Simplify right side
    10,079.06x = 120,680,264.94
  5. Step 5: Solve for x
    x = 120,680,264.94/10,079.06
  6. Step 6: Final answer
    x = 11,973.37

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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.