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Finding the Fourth Proportional to 5,550.81, 7,652.66 and 5,378.82

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Solution

The fourth proportional to 5,550.81, 7,652.66 and 5,378.82 is: 7,415.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,550.81 : 7,652.66 = 5,378.82 : x
  2. Step 2: Convert to fraction form
    5,550.81/7,652.66 = 5,378.82/x
  3. Step 3: Cross multiply
    5,550.81x = 7,652.66 × 5,378.82
  4. Step 4: Simplify right side
    5,550.81x = 41,162,253.77
  5. Step 5: Solve for x
    x = 41,162,253.77/5,550.81
  6. Step 6: Final answer
    x = 7,415.54

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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.