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Finding the Fourth Proportional to 13,901.79, 20,851.74 and 5,585.52

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Solution

The fourth proportional to 13,901.79, 20,851.74 and 5,585.52 is: 8,377.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,901.79 : 20,851.74 = 5,585.52 : x
  2. Step 2: Convert to fraction form
    13,901.79/20,851.74 = 5,585.52/x
  3. Step 3: Cross multiply
    13,901.79x = 20,851.74 × 5,585.52
  4. Step 4: Simplify right side
    13,901.79x = 116,467,810.80
  5. Step 5: Solve for x
    x = 116,467,810.80/13,901.79
  6. Step 6: Final answer
    x = 8,377.90

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.