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Finding the Fourth Proportional to 6,696.90, 9,241.65 and 3,712.86

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Solution

The fourth proportional to 6,696.90, 9,241.65 and 3,712.86 is: 5,123.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,696.90 : 9,241.65 = 3,712.86 : x
  2. Step 2: Convert to fraction form
    6,696.90/9,241.65 = 3,712.86/x
  3. Step 3: Cross multiply
    6,696.90x = 9,241.65 × 3,712.86
  4. Step 4: Simplify right side
    6,696.90x = 34,312,952.62
  5. Step 5: Solve for x
    x = 34,312,952.62/6,696.90
  6. Step 6: Final answer
    x = 5,123.71

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1.5x scale

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.