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Finding the Fourth Proportional to 10,988.88, 16,485.80 and 3,593.88

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Solution

The fourth proportional to 10,988.88, 16,485.80 and 3,593.88 is: 5,391.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,988.88 : 16,485.80 = 3,593.88 : x
  2. Step 2: Convert to fraction form
    10,988.88/16,485.80 = 3,593.88/x
  3. Step 3: Cross multiply
    10,988.88x = 16,485.80 × 3,593.88
  4. Step 4: Simplify right side
    10,988.88x = 59,247,986.90
  5. Step 5: Solve for x
    x = 59,247,986.90/10,988.88
  6. Step 6: Final answer
    x = 5,391.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.