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Finding the Fourth Proportional to 1,175.79, 1,762.21 and 1,029.22

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Solution

The fourth proportional to 1,175.79, 1,762.21 and 1,029.22 is: 1,542.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175.79 : 1,762.21 = 1,029.22 : x
  2. Step 2: Convert to fraction form
    1,175.79/1,762.21 = 1,029.22/x
  3. Step 3: Cross multiply
    1,175.79x = 1,762.21 × 1,029.22
  4. Step 4: Simplify right side
    1,175.79x = 1,813,701.78
  5. Step 5: Solve for x
    x = 1,813,701.78/1,175.79
  6. Step 6: Final answer
    x = 1,542.54

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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.