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Finding the Fourth Proportional to 8,757.36, 13,047.54 and 8,339.40

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Solution

The fourth proportional to 8,757.36, 13,047.54 and 8,339.40 is: 12,424.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.36 : 13,047.54 = 8,339.40 : x
  2. Step 2: Convert to fraction form
    8,757.36/13,047.54 = 8,339.40/x
  3. Step 3: Cross multiply
    8,757.36x = 13,047.54 × 8,339.40
  4. Step 4: Simplify right side
    8,757.36x = 108,808,623.80
  5. Step 5: Solve for x
    x = 108,808,623.80/8,757.36
  6. Step 6: Final answer
    x = 12,424.82

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.