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Finding the Fourth Proportional to 1,176.64, 1,765.02 and 682.73

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Solution

The fourth proportional to 1,176.64, 1,765.02 and 682.73 is: 1,024.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.64 : 1,765.02 = 682.73 : x
  2. Step 2: Convert to fraction form
    1,176.64/1,765.02 = 682.73/x
  3. Step 3: Cross multiply
    1,176.64x = 1,765.02 × 682.73
  4. Step 4: Simplify right side
    1,176.64x = 1,205,032.10
  5. Step 5: Solve for x
    x = 1,205,032.10/1,176.64
  6. Step 6: Final answer
    x = 1,024.13

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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.