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Finding the Fourth Proportional to 1,193.73, 1,647.90 and 752.28

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Solution

The fourth proportional to 1,193.73, 1,647.90 and 752.28 is: 1,038.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193.73 : 1,647.90 = 752.28 : x
  2. Step 2: Convert to fraction form
    1,193.73/1,647.90 = 752.28/x
  3. Step 3: Cross multiply
    1,193.73x = 1,647.90 × 752.28
  4. Step 4: Simplify right side
    1,193.73x = 1,239,682.21
  5. Step 5: Solve for x
    x = 1,239,682.21/1,193.73
  6. Step 6: Final answer
    x = 1,038.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.