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Finding the Fourth Proportional to 5,388.32, 8,078.16 and 3,332

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Solution

The fourth proportional to 5,388.32, 8,078.16 and 3,332 is: 4,995.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.32 : 8,078.16 = 3,332 : x
  2. Step 2: Convert to fraction form
    5,388.32/8,078.16 = 3,332/x
  3. Step 3: Cross multiply
    5,388.32x = 8,078.16 × 3,332
  4. Step 4: Simplify right side
    5,388.32x = 26,916,429.12
  5. Step 5: Solve for x
    x = 26,916,429.12/5,388.32
  6. Step 6: Final answer
    x = 4,995.33

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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.