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Finding the Fourth Proportional to 8,871.65, 12,244.34 and 5,336.81

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Solution

The fourth proportional to 8,871.65, 12,244.34 and 5,336.81 is: 7,365.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.65 : 12,244.34 = 5,336.81 : x
  2. Step 2: Convert to fraction form
    8,871.65/12,244.34 = 5,336.81/x
  3. Step 3: Cross multiply
    8,871.65x = 12,244.34 × 5,336.81
  4. Step 4: Simplify right side
    8,871.65x = 65,345,716.16
  5. Step 5: Solve for x
    x = 65,345,716.16/8,871.65
  6. Step 6: Final answer
    x = 7,365.68

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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.