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Finding the Fourth Proportional to 8,937.79, 13,408.96 and 5,243.28

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Solution

The fourth proportional to 8,937.79, 13,408.96 and 5,243.28 is: 7,866.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,937.79 : 13,408.96 = 5,243.28 : x
  2. Step 2: Convert to fraction form
    8,937.79/13,408.96 = 5,243.28/x
  3. Step 3: Cross multiply
    8,937.79x = 13,408.96 × 5,243.28
  4. Step 4: Simplify right side
    8,937.79x = 70,306,864.74
  5. Step 5: Solve for x
    x = 70,306,864.74/8,937.79
  6. Step 6: Final answer
    x = 7,866.25

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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.