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Finding the Fourth Proportional to 925.99, 1,388.71 and 695.41

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Solution

The fourth proportional to 925.99, 1,388.71 and 695.41 is: 1,042.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    925.99 : 1,388.71 = 695.41 : x
  2. Step 2: Convert to fraction form
    925.99/1,388.71 = 695.41/x
  3. Step 3: Cross multiply
    925.99x = 1,388.71 × 695.41
  4. Step 4: Simplify right side
    925.99x = 965,722.82
  5. Step 5: Solve for x
    x = 965,722.82/925.99
  6. Step 6: Final answer
    x = 1,042.91

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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.