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Finding the Fourth Proportional to 25,753.80, 38,630.70 and 19,914.60

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Solution

The fourth proportional to 25,753.80, 38,630.70 and 19,914.60 is: 29,871.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,753.80 : 38,630.70 = 19,914.60 : x
  2. Step 2: Convert to fraction form
    25,753.80/38,630.70 = 19,914.60/x
  3. Step 3: Cross multiply
    25,753.80x = 38,630.70 × 19,914.60
  4. Step 4: Simplify right side
    25,753.80x = 769,314,938.22
  5. Step 5: Solve for x
    x = 769,314,938.22/25,753.80
  6. Step 6: Final answer
    x = 29,871.90

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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.