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Finding the Fourth Proportional to 8,363.62, 12,472.34 and 7,328.44

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Solution

The fourth proportional to 8,363.62, 12,472.34 and 7,328.44 is: 10,928.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,363.62 : 12,472.34 = 7,328.44 : x
  2. Step 2: Convert to fraction form
    8,363.62/12,472.34 = 7,328.44/x
  3. Step 3: Cross multiply
    8,363.62x = 12,472.34 × 7,328.44
  4. Step 4: Simplify right side
    8,363.62x = 91,402,795.35
  5. Step 5: Solve for x
    x = 91,402,795.35/8,363.62
  6. Step 6: Final answer
    x = 10,928.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.