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Finding the Fourth Proportional to 1,131.92, 1,698.15 and 352.01

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Solution

The fourth proportional to 1,131.92, 1,698.15 and 352.01 is: 528.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131.92 : 1,698.15 = 352.01 : x
  2. Step 2: Convert to fraction form
    1,131.92/1,698.15 = 352.01/x
  3. Step 3: Cross multiply
    1,131.92x = 1,698.15 × 352.01
  4. Step 4: Simplify right side
    1,131.92x = 597,765.78
  5. Step 5: Solve for x
    x = 597,765.78/1,131.92
  6. Step 6: Final answer
    x = 528.10

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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.