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Finding the Fourth Proportional to 1,174.16, 1,760.72 and 626.24

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Solution

The fourth proportional to 1,174.16, 1,760.72 and 626.24 is: 939.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174.16 : 1,760.72 = 626.24 : x
  2. Step 2: Convert to fraction form
    1,174.16/1,760.72 = 626.24/x
  3. Step 3: Cross multiply
    1,174.16x = 1,760.72 × 626.24
  4. Step 4: Simplify right side
    1,174.16x = 1,102,633.29
  5. Step 5: Solve for x
    x = 1,102,633.29/1,174.16
  6. Step 6: Final answer
    x = 939.08

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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.