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Finding the Fourth Proportional to 5,167.90, 7,751.91 and 1,470.39

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Solution

The fourth proportional to 5,167.90, 7,751.91 and 1,470.39 is: 2,205.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,167.90 : 7,751.91 = 1,470.39 : x
  2. Step 2: Convert to fraction form
    5,167.90/7,751.91 = 1,470.39/x
  3. Step 3: Cross multiply
    5,167.90x = 7,751.91 × 1,470.39
  4. Step 4: Simplify right side
    5,167.90x = 11,398,330.94
  5. Step 5: Solve for x
    x = 11,398,330.94/5,167.90
  6. Step 6: Final answer
    x = 2,205.60

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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.