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Finding the Fourth Proportional to 6,470.47, 8,929.20 and 3,675.97

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Solution

The fourth proportional to 6,470.47, 8,929.20 and 3,675.97 is: 5,072.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,470.47 : 8,929.20 = 3,675.97 : x
  2. Step 2: Convert to fraction form
    6,470.47/8,929.20 = 3,675.97/x
  3. Step 3: Cross multiply
    6,470.47x = 8,929.20 × 3,675.97
  4. Step 4: Simplify right side
    6,470.47x = 32,823,471.32
  5. Step 5: Solve for x
    x = 32,823,471.32/6,470.47
  6. Step 6: Final answer
    x = 5,072.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.