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Finding the Fourth Proportional to 936.18, 1,292.25 and 586.89

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Solution

The fourth proportional to 936.18, 1,292.25 and 586.89 is: 810.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.18 : 1,292.25 = 586.89 : x
  2. Step 2: Convert to fraction form
    936.18/1,292.25 = 586.89/x
  3. Step 3: Cross multiply
    936.18x = 1,292.25 × 586.89
  4. Step 4: Simplify right side
    936.18x = 758,408.60
  5. Step 5: Solve for x
    x = 758,408.60/936.18
  6. Step 6: Final answer
    x = 810.11

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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.