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Finding the Fourth Proportional to 53,940.20, 80,910.30 and 48,237.80

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Solution

The fourth proportional to 53,940.20, 80,910.30 and 48,237.80 is: 72,356.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,940.20 : 80,910.30 = 48,237.80 : x
  2. Step 2: Convert to fraction form
    53,940.20/80,910.30 = 48,237.80/x
  3. Step 3: Cross multiply
    53,940.20x = 80,910.30 × 48,237.80
  4. Step 4: Simplify right side
    53,940.20x = 3,902,934,869.34
  5. Step 5: Solve for x
    x = 3,902,934,869.34/53,940.20
  6. Step 6: Final answer
    x = 72,356.70

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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.