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Finding the Fourth Proportional to 7,617.68, 10,523.04 and 7,218.68

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Solution

The fourth proportional to 7,617.68, 10,523.04 and 7,218.68 is: 9,971.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,617.68 : 10,523.04 = 7,218.68 : x
  2. Step 2: Convert to fraction form
    7,617.68/10,523.04 = 7,218.68/x
  3. Step 3: Cross multiply
    7,617.68x = 10,523.04 × 7,218.68
  4. Step 4: Simplify right side
    7,617.68x = 75,962,458.39
  5. Step 5: Solve for x
    x = 75,962,458.39/7,617.68
  6. Step 6: Final answer
    x = 9,971.86

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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.