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Finding the Fourth Proportional to 8,674.40, 12,992.16 and 5,204.48

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Solution

The fourth proportional to 8,674.40, 12,992.16 and 5,204.48 is: 7,795.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,674.40 : 12,992.16 = 5,204.48 : x
  2. Step 2: Convert to fraction form
    8,674.40/12,992.16 = 5,204.48/x
  3. Step 3: Cross multiply
    8,674.40x = 12,992.16 × 5,204.48
  4. Step 4: Simplify right side
    8,674.40x = 67,617,436.88
  5. Step 5: Solve for x
    x = 67,617,436.88/8,674.40
  6. Step 6: Final answer
    x = 7,795.06

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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.