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Finding the Fourth Proportional to 9,982.88, 13,776.20 and 5,507.06

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Solution

The fourth proportional to 9,982.88, 13,776.20 and 5,507.06 is: 7,599.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,982.88 : 13,776.20 = 5,507.06 : x
  2. Step 2: Convert to fraction form
    9,982.88/13,776.20 = 5,507.06/x
  3. Step 3: Cross multiply
    9,982.88x = 13,776.20 × 5,507.06
  4. Step 4: Simplify right side
    9,982.88x = 75,866,359.97
  5. Step 5: Solve for x
    x = 75,866,359.97/9,982.88
  6. Step 6: Final answer
    x = 7,599.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.