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Finding the Fourth Proportional to 63,571.26, 87,745.35 and 39,683.55

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Solution

The fourth proportional to 63,571.26, 87,745.35 and 39,683.55 is: 54,773.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,571.26 : 87,745.35 = 39,683.55 : x
  2. Step 2: Convert to fraction form
    63,571.26/87,745.35 = 39,683.55/x
  3. Step 3: Cross multiply
    63,571.26x = 87,745.35 × 39,683.55
  4. Step 4: Simplify right side
    63,571.26x = 3,482,046,983.99
  5. Step 5: Solve for x
    x = 3,482,046,983.99/63,571.26
  6. Step 6: Final answer
    x = 54,773.92

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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.