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Finding the Fourth Proportional to 1,182.16, 1,773.30 and 360.55

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Solution

The fourth proportional to 1,182.16, 1,773.30 and 360.55 is: 540.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,182.16 : 1,773.30 = 360.55 : x
  2. Step 2: Convert to fraction form
    1,182.16/1,773.30 = 360.55/x
  3. Step 3: Cross multiply
    1,182.16x = 1,773.30 × 360.55
  4. Step 4: Simplify right side
    1,182.16x = 639,363.32
  5. Step 5: Solve for x
    x = 639,363.32/1,182.16
  6. Step 6: Final answer
    x = 540.84

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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.