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Finding the Fourth Proportional to 8,708.74, 12,011.91 and 5,353.44

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Solution

The fourth proportional to 8,708.74, 12,011.91 and 5,353.44 is: 7,383.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,708.74 : 12,011.91 = 5,353.44 : x
  2. Step 2: Convert to fraction form
    8,708.74/12,011.91 = 5,353.44/x
  3. Step 3: Cross multiply
    8,708.74x = 12,011.91 × 5,353.44
  4. Step 4: Simplify right side
    8,708.74x = 64,305,039.47
  5. Step 5: Solve for x
    x = 64,305,039.47/8,708.74
  6. Step 6: Final answer
    x = 7,383.97

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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.