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Finding the Fourth Proportional to 5,687.20, 8,545.20 and 5,053.60

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Solution

The fourth proportional to 5,687.20, 8,545.20 and 5,053.60 is: 7,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,687.20 : 8,545.20 = 5,053.60 : x
  2. Step 2: Convert to fraction form
    5,687.20/8,545.20 = 5,053.60/x
  3. Step 3: Cross multiply
    5,687.20x = 8,545.20 × 5,053.60
  4. Step 4: Simplify right side
    5,687.20x = 43,184,022.72
  5. Step 5: Solve for x
    x = 43,184,022.72/5,687.20
  6. Step 6: Final answer
    x = 7,593.20

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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.