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Finding the Fourth Proportional to 5,673.73, 7,829.63 and 3,155.75

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Solution

The fourth proportional to 5,673.73, 7,829.63 and 3,155.75 is: 4,354.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,673.73 : 7,829.63 = 3,155.75 : x
  2. Step 2: Convert to fraction form
    5,673.73/7,829.63 = 3,155.75/x
  3. Step 3: Cross multiply
    5,673.73x = 7,829.63 × 3,155.75
  4. Step 4: Simplify right side
    5,673.73x = 24,708,367.75
  5. Step 5: Solve for x
    x = 24,708,367.75/5,673.73
  6. Step 6: Final answer
    x = 4,354.87

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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.