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Finding the Fourth Proportional to 2,693.76, 3,716.70 and 1,574.22

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Solution

The fourth proportional to 2,693.76, 3,716.70 and 1,574.22 is: 2,172.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,693.76 : 3,716.70 = 1,574.22 : x
  2. Step 2: Convert to fraction form
    2,693.76/3,716.70 = 1,574.22/x
  3. Step 3: Cross multiply
    2,693.76x = 3,716.70 × 1,574.22
  4. Step 4: Simplify right side
    2,693.76x = 5,850,903.47
  5. Step 5: Solve for x
    x = 5,850,903.47/2,693.76
  6. Step 6: Final answer
    x = 2,172.02

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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.