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Finding the Fourth Proportional to 7,079.28, 10,619.28 and 2,695.92

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Solution

The fourth proportional to 7,079.28, 10,619.28 and 2,695.92 is: 4,044.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,079.28 : 10,619.28 = 2,695.92 : x
  2. Step 2: Convert to fraction form
    7,079.28/10,619.28 = 2,695.92/x
  3. Step 3: Cross multiply
    7,079.28x = 10,619.28 × 2,695.92
  4. Step 4: Simplify right side
    7,079.28x = 28,628,729.34
  5. Step 5: Solve for x
    x = 28,628,729.34/7,079.28
  6. Step 6: Final answer
    x = 4,044.02

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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.