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Finding the Fourth Proportional to 67,728.99, 93,469.35 and 40,871.04

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Solution

The fourth proportional to 67,728.99, 93,469.35 and 40,871.04 is: 56,404.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,728.99 : 93,469.35 = 40,871.04 : x
  2. Step 2: Convert to fraction form
    67,728.99/93,469.35 = 40,871.04/x
  3. Step 3: Cross multiply
    67,728.99x = 93,469.35 × 40,871.04
  4. Step 4: Simplify right side
    67,728.99x = 3,820,189,542.62
  5. Step 5: Solve for x
    x = 3,820,189,542.62/67,728.99
  6. Step 6: Final answer
    x = 56,404.05

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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.