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Finding the Fourth Proportional to 40,491.30, 55,904.01 and 25,404.66

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Solution

The fourth proportional to 40,491.30, 55,904.01 and 25,404.66 is: 35,074.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,491.30 : 55,904.01 = 25,404.66 : x
  2. Step 2: Convert to fraction form
    40,491.30/55,904.01 = 25,404.66/x
  3. Step 3: Cross multiply
    40,491.30x = 55,904.01 × 25,404.66
  4. Step 4: Simplify right side
    40,491.30x = 1,420,222,366.69
  5. Step 5: Solve for x
    x = 1,420,222,366.69/40,491.30
  6. Step 6: Final answer
    x = 35,074.75

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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.