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Finding the Fourth Proportional to 5,789.64, 7,990.74 and 4,545.48

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Solution

The fourth proportional to 5,789.64, 7,990.74 and 4,545.48 is: 6,273.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,789.64 : 7,990.74 = 4,545.48 : x
  2. Step 2: Convert to fraction form
    5,789.64/7,990.74 = 4,545.48/x
  3. Step 3: Cross multiply
    5,789.64x = 7,990.74 × 4,545.48
  4. Step 4: Simplify right side
    5,789.64x = 36,321,748.86
  5. Step 5: Solve for x
    x = 36,321,748.86/5,789.64
  6. Step 6: Final answer
    x = 6,273.58

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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.