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Finding the Fourth Proportional to 9,363.52, 12,921.64 and 5,171.76

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Solution

The fourth proportional to 9,363.52, 12,921.64 and 5,171.76 is: 7,137.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,363.52 : 12,921.64 = 5,171.76 : x
  2. Step 2: Convert to fraction form
    9,363.52/12,921.64 = 5,171.76/x
  3. Step 3: Cross multiply
    9,363.52x = 12,921.64 × 5,171.76
  4. Step 4: Simplify right side
    9,363.52x = 66,827,620.89
  5. Step 5: Solve for x
    x = 66,827,620.89/9,363.52
  6. Step 6: Final answer
    x = 7,137.02

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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.