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Finding the Fourth Proportional to 12,981.52, 17,913.45 and 7,314.49

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Solution

The fourth proportional to 12,981.52, 17,913.45 and 7,314.49 is: 10,093.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981.52 : 17,913.45 = 7,314.49 : x
  2. Step 2: Convert to fraction form
    12,981.52/17,913.45 = 7,314.49/x
  3. Step 3: Cross multiply
    12,981.52x = 17,913.45 × 7,314.49
  4. Step 4: Simplify right side
    12,981.52x = 131,027,750.89
  5. Step 5: Solve for x
    x = 131,027,750.89/12,981.52
  6. Step 6: Final answer
    x = 10,093.41

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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.