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Finding the Fourth Proportional to 2,672.16, 4,010.04 and 940.80

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Solution

The fourth proportional to 2,672.16, 4,010.04 and 940.80 is: 1,411.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.16 : 4,010.04 = 940.80 : x
  2. Step 2: Convert to fraction form
    2,672.16/4,010.04 = 940.80/x
  3. Step 3: Cross multiply
    2,672.16x = 4,010.04 × 940.80
  4. Step 4: Simplify right side
    2,672.16x = 3,772,645.63
  5. Step 5: Solve for x
    x = 3,772,645.63/2,672.16
  6. Step 6: Final answer
    x = 1,411.83

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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.