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Finding the Fourth Proportional to 25,480.85, 35,165.34 and 15,409.71

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Solution

The fourth proportional to 25,480.85, 35,165.34 and 15,409.71 is: 21,266.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,480.85 : 35,165.34 = 15,409.71 : x
  2. Step 2: Convert to fraction form
    25,480.85/35,165.34 = 15,409.71/x
  3. Step 3: Cross multiply
    25,480.85x = 35,165.34 × 15,409.71
  4. Step 4: Simplify right side
    25,480.85x = 541,887,691.45
  5. Step 5: Solve for x
    x = 541,887,691.45/25,480.85
  6. Step 6: Final answer
    x = 21,266.47

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.