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Finding the Fourth Proportional to 48,762.96, 73,170.90 and 20,698.80

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Solution

The fourth proportional to 48,762.96, 73,170.90 and 20,698.80 is: 31,059.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,762.96 : 73,170.90 = 20,698.80 : x
  2. Step 2: Convert to fraction form
    48,762.96/73,170.90 = 20,698.80/x
  3. Step 3: Cross multiply
    48,762.96x = 73,170.90 × 20,698.80
  4. Step 4: Simplify right side
    48,762.96x = 1,514,549,824.92
  5. Step 5: Solve for x
    x = 1,514,549,824.92/48,762.96
  6. Step 6: Final answer
    x = 31,059.43

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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.