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Finding the Fourth Proportional to 1,232.24, 1,699.71 and 936.86

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Solution

The fourth proportional to 1,232.24, 1,699.71 and 936.86 is: 1,292.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,232.24 : 1,699.71 = 936.86 : x
  2. Step 2: Convert to fraction form
    1,232.24/1,699.71 = 936.86/x
  3. Step 3: Cross multiply
    1,232.24x = 1,699.71 × 936.86
  4. Step 4: Simplify right side
    1,232.24x = 1,592,390.31
  5. Step 5: Solve for x
    x = 1,592,390.31/1,232.24
  6. Step 6: Final answer
    x = 1,292.27

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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.