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Finding the Fourth Proportional to 48,674.70, 72,971.55 and 20,616.30

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Solution

The fourth proportional to 48,674.70, 72,971.55 and 20,616.30 is: 30,907.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,674.70 : 72,971.55 = 20,616.30 : x
  2. Step 2: Convert to fraction form
    48,674.70/72,971.55 = 20,616.30/x
  3. Step 3: Cross multiply
    48,674.70x = 72,971.55 × 20,616.30
  4. Step 4: Simplify right side
    48,674.70x = 1,504,403,366.27
  5. Step 5: Solve for x
    x = 1,504,403,366.27/48,674.70
  6. Step 6: Final answer
    x = 30,907.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.