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Finding the Fourth Proportional to 10,845.80, 16,244.40 and 8,658.80

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Solution

The fourth proportional to 10,845.80, 16,244.40 and 8,658.80 is: 12,968.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,845.80 : 16,244.40 = 8,658.80 : x
  2. Step 2: Convert to fraction form
    10,845.80/16,244.40 = 8,658.80/x
  3. Step 3: Cross multiply
    10,845.80x = 16,244.40 × 8,658.80
  4. Step 4: Simplify right side
    10,845.80x = 140,657,010.72
  5. Step 5: Solve for x
    x = 140,657,010.72/10,845.80
  6. Step 6: Final answer
    x = 12,968.80

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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.