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Finding the Fourth Proportional to 52,169.90, 71,993.79 and 28,295.90

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Solution

The fourth proportional to 52,169.90, 71,993.79 and 28,295.90 is: 39,047.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,169.90 : 71,993.79 = 28,295.90 : x
  2. Step 2: Convert to fraction form
    52,169.90/71,993.79 = 28,295.90/x
  3. Step 3: Cross multiply
    52,169.90x = 71,993.79 × 28,295.90
  4. Step 4: Simplify right side
    52,169.90x = 2,037,129,082.46
  5. Step 5: Solve for x
    x = 2,037,129,082.46/52,169.90
  6. Step 6: Final answer
    x = 39,047.98

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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.