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Finding the Fourth Proportional to 1,180.64, 1,769.16 and 1,058.24

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Solution

The fourth proportional to 1,180.64, 1,769.16 and 1,058.24 is: 1,585.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.64 : 1,769.16 = 1,058.24 : x
  2. Step 2: Convert to fraction form
    1,180.64/1,769.16 = 1,058.24/x
  3. Step 3: Cross multiply
    1,180.64x = 1,769.16 × 1,058.24
  4. Step 4: Simplify right side
    1,180.64x = 1,872,195.88
  5. Step 5: Solve for x
    x = 1,872,195.88/1,180.64
  6. Step 6: Final answer
    x = 1,585.75

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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.