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Finding the Fourth Proportional to 2,012.97, 3,019.76 and 714.34

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Solution

The fourth proportional to 2,012.97, 3,019.76 and 714.34 is: 1,071.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,012.97 : 3,019.76 = 714.34 : x
  2. Step 2: Convert to fraction form
    2,012.97/3,019.76 = 714.34/x
  3. Step 3: Cross multiply
    2,012.97x = 3,019.76 × 714.34
  4. Step 4: Simplify right side
    2,012.97x = 2,157,135.36
  5. Step 5: Solve for x
    x = 2,157,135.36/2,012.97
  6. Step 6: Final answer
    x = 1,071.62

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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.