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Finding the Fourth Proportional to 8,248.32, 12,363.84 and 3,316.80

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Solution

The fourth proportional to 8,248.32, 12,363.84 and 3,316.80 is: 4,971.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,248.32 : 12,363.84 = 3,316.80 : x
  2. Step 2: Convert to fraction form
    8,248.32/12,363.84 = 3,316.80/x
  3. Step 3: Cross multiply
    8,248.32x = 12,363.84 × 3,316.80
  4. Step 4: Simplify right side
    8,248.32x = 41,008,384.51
  5. Step 5: Solve for x
    x = 41,008,384.51/8,248.32
  6. Step 6: Final answer
    x = 4,971.73

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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.