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Finding the Fourth Proportional to 4,921.86, 6,791.95 and 2,683.68

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Solution

The fourth proportional to 4,921.86, 6,791.95 and 2,683.68 is: 3,703.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.86 : 6,791.95 = 2,683.68 : x
  2. Step 2: Convert to fraction form
    4,921.86/6,791.95 = 2,683.68/x
  3. Step 3: Cross multiply
    4,921.86x = 6,791.95 × 2,683.68
  4. Step 4: Simplify right side
    4,921.86x = 18,227,420.38
  5. Step 5: Solve for x
    x = 18,227,420.38/4,921.86
  6. Step 6: Final answer
    x = 3,703.36

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Double scale
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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.