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Finding the Fourth Proportional to 866.06, 1,193.64 and 586.19

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Solution

The fourth proportional to 866.06, 1,193.64 and 586.19 is: 807.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    866.06 : 1,193.64 = 586.19 : x
  2. Step 2: Convert to fraction form
    866.06/1,193.64 = 586.19/x
  3. Step 3: Cross multiply
    866.06x = 1,193.64 × 586.19
  4. Step 4: Simplify right side
    866.06x = 699,693.86
  5. Step 5: Solve for x
    x = 699,693.86/866.06
  6. Step 6: Final answer
    x = 807.91

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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.