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Finding the Fourth Proportional to 13,393.80, 20,078.87 and 5,068.04

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Solution

The fourth proportional to 13,393.80, 20,078.87 and 5,068.04 is: 7,597.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,393.80 : 20,078.87 = 5,068.04 : x
  2. Step 2: Convert to fraction form
    13,393.80/20,078.87 = 5,068.04/x
  3. Step 3: Cross multiply
    13,393.80x = 20,078.87 × 5,068.04
  4. Step 4: Simplify right side
    13,393.80x = 101,760,390.58
  5. Step 5: Solve for x
    x = 101,760,390.58/13,393.80
  6. Step 6: Final answer
    x = 7,597.57

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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.