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Finding the Fourth Proportional to 48,786.80, 73,266.60 and 37,720.40

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Solution

The fourth proportional to 48,786.80, 73,266.60 and 37,720.40 is: 56,647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,786.80 : 73,266.60 = 37,720.40 : x
  2. Step 2: Convert to fraction form
    48,786.80/73,266.60 = 37,720.40/x
  3. Step 3: Cross multiply
    48,786.80x = 73,266.60 × 37,720.40
  4. Step 4: Simplify right side
    48,786.80x = 2,763,645,458.64
  5. Step 5: Solve for x
    x = 2,763,645,458.64/48,786.80
  6. Step 6: Final answer
    x = 56,647.40

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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.