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Finding the Fourth Proportional to 67,406.99, 100,952.91 and 53,272.13

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Solution

The fourth proportional to 67,406.99, 100,952.91 and 53,272.13 is: 79,783.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,406.99 : 100,952.91 = 53,272.13 : x
  2. Step 2: Convert to fraction form
    67,406.99/100,952.91 = 53,272.13/x
  3. Step 3: Cross multiply
    67,406.99x = 100,952.91 × 53,272.13
  4. Step 4: Simplify right side
    67,406.99x = 5,377,976,458.67
  5. Step 5: Solve for x
    x = 5,377,976,458.67/67,406.99
  6. Step 6: Final answer
    x = 79,783.67

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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.