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Finding the Fourth Proportional to 8,048.25, 12,073.28 and 7,221.45

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Solution

The fourth proportional to 8,048.25, 12,073.28 and 7,221.45 is: 10,832.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,048.25 : 12,073.28 = 7,221.45 : x
  2. Step 2: Convert to fraction form
    8,048.25/12,073.28 = 7,221.45/x
  3. Step 3: Cross multiply
    8,048.25x = 12,073.28 × 7,221.45
  4. Step 4: Simplify right side
    8,048.25x = 87,186,551.75
  5. Step 5: Solve for x
    x = 87,186,551.75/8,048.25
  6. Step 6: Final answer
    x = 10,832.98

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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.