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Finding the Fourth Proportional to 48,818.60, 73,239.90 and 13,757.80

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Solution

The fourth proportional to 48,818.60, 73,239.90 and 13,757.80 is: 20,640.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,818.60 : 73,239.90 = 13,757.80 : x
  2. Step 2: Convert to fraction form
    48,818.60/73,239.90 = 13,757.80/x
  3. Step 3: Cross multiply
    48,818.60x = 73,239.90 × 13,757.80
  4. Step 4: Simplify right side
    48,818.60x = 1,007,619,896.22
  5. Step 5: Solve for x
    x = 1,007,619,896.22/48,818.60
  6. Step 6: Final answer
    x = 20,640.08

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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.