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Finding the Fourth Proportional to 1,161.36, 1,602 and 695.52

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Solution

The fourth proportional to 1,161.36, 1,602 and 695.52 is: 959.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.36 : 1,602 = 695.52 : x
  2. Step 2: Convert to fraction form
    1,161.36/1,602 = 695.52/x
  3. Step 3: Cross multiply
    1,161.36x = 1,602 × 695.52
  4. Step 4: Simplify right side
    1,161.36x = 1,114,223.04
  5. Step 5: Solve for x
    x = 1,114,223.04/1,161.36
  6. Step 6: Final answer
    x = 959.41

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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.