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Finding the Fourth Proportional to 72,855.48, 100,551.72 and 44,179.80

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Solution

The fourth proportional to 72,855.48, 100,551.72 and 44,179.80 is: 60,974.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,855.48 : 100,551.72 = 44,179.80 : x
  2. Step 2: Convert to fraction form
    72,855.48/100,551.72 = 44,179.80/x
  3. Step 3: Cross multiply
    72,855.48x = 100,551.72 × 44,179.80
  4. Step 4: Simplify right side
    72,855.48x = 4,442,354,879.26
  5. Step 5: Solve for x
    x = 4,442,354,879.26/72,855.48
  6. Step 6: Final answer
    x = 60,974.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.