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Finding the Fourth Proportional to 26,797.28, 36,978.54 and 14,860.61

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Solution

The fourth proportional to 26,797.28, 36,978.54 and 14,860.61 is: 20,506.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,797.28 : 36,978.54 = 14,860.61 : x
  2. Step 2: Convert to fraction form
    26,797.28/36,978.54 = 14,860.61/x
  3. Step 3: Cross multiply
    26,797.28x = 36,978.54 × 14,860.61
  4. Step 4: Simplify right side
    26,797.28x = 549,523,476.42
  5. Step 5: Solve for x
    x = 549,523,476.42/26,797.28
  6. Step 6: Final answer
    x = 20,506.69

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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.