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Finding the Fourth Proportional to 7,003.68, 9,664.20 and 4,019.12

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Solution

The fourth proportional to 7,003.68, 9,664.20 and 4,019.12 is: 5,545.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,003.68 : 9,664.20 = 4,019.12 : x
  2. Step 2: Convert to fraction form
    7,003.68/9,664.20 = 4,019.12/x
  3. Step 3: Cross multiply
    7,003.68x = 9,664.20 × 4,019.12
  4. Step 4: Simplify right side
    7,003.68x = 38,841,579.50
  5. Step 5: Solve for x
    x = 38,841,579.50/7,003.68
  6. Step 6: Final answer
    x = 5,545.88

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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.