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Finding the Fourth Proportional to 27,079.88, 40,620.66 and 7,358.86

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Solution

The fourth proportional to 27,079.88, 40,620.66 and 7,358.86 is: 11,038.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,079.88 : 40,620.66 = 7,358.86 : x
  2. Step 2: Convert to fraction form
    27,079.88/40,620.66 = 7,358.86/x
  3. Step 3: Cross multiply
    27,079.88x = 40,620.66 × 7,358.86
  4. Step 4: Simplify right side
    27,079.88x = 298,921,648.50
  5. Step 5: Solve for x
    x = 298,921,648.50/27,079.88
  6. Step 6: Final answer
    x = 11,038.51

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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.