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Finding the Fourth Proportional to 9,854.63, 13,599.63 and 5,378.79

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Solution

The fourth proportional to 9,854.63, 13,599.63 and 5,378.79 is: 7,422.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,854.63 : 13,599.63 = 5,378.79 : x
  2. Step 2: Convert to fraction form
    9,854.63/13,599.63 = 5,378.79/x
  3. Step 3: Cross multiply
    9,854.63x = 13,599.63 × 5,378.79
  4. Step 4: Simplify right side
    9,854.63x = 73,149,553.85
  5. Step 5: Solve for x
    x = 73,149,553.85/9,854.63
  6. Step 6: Final answer
    x = 7,422.87

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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.