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Finding the Fourth Proportional to 29,975.80, 44,963.70 and 20,644.60

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Solution

The fourth proportional to 29,975.80, 44,963.70 and 20,644.60 is: 30,966.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,975.80 : 44,963.70 = 20,644.60 : x
  2. Step 2: Convert to fraction form
    29,975.80/44,963.70 = 20,644.60/x
  3. Step 3: Cross multiply
    29,975.80x = 44,963.70 × 20,644.60
  4. Step 4: Simplify right side
    29,975.80x = 928,257,601.02
  5. Step 5: Solve for x
    x = 928,257,601.02/29,975.80
  6. Step 6: Final answer
    x = 30,966.90

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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.