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Finding the Fourth Proportional to 1,048.43, 1,571.10 and 700.57

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Solution

The fourth proportional to 1,048.43, 1,571.10 and 700.57 is: 1,049.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.43 : 1,571.10 = 700.57 : x
  2. Step 2: Convert to fraction form
    1,048.43/1,571.10 = 700.57/x
  3. Step 3: Cross multiply
    1,048.43x = 1,571.10 × 700.57
  4. Step 4: Simplify right side
    1,048.43x = 1,100,664.86
  5. Step 5: Solve for x
    x = 1,100,664.86/1,048.43
  6. Step 6: Final answer
    x = 1,049.82

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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.