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Finding the Fourth Proportional to 7,659.12, 11,469.18 and 6,116.88

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Solution

The fourth proportional to 7,659.12, 11,469.18 and 6,116.88 is: 9,159.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,659.12 : 11,469.18 = 6,116.88 : x
  2. Step 2: Convert to fraction form
    7,659.12/11,469.18 = 6,116.88/x
  3. Step 3: Cross multiply
    7,659.12x = 11,469.18 × 6,116.88
  4. Step 4: Simplify right side
    7,659.12x = 70,155,597.76
  5. Step 5: Solve for x
    x = 70,155,597.76/7,659.12
  6. Step 6: Final answer
    x = 9,159.75

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1.5x scale

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.