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Finding the Fourth Proportional to 39,381.99, 59,060.22 and 13,079.67

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Solution

The fourth proportional to 39,381.99, 59,060.22 and 13,079.67 is: 19,615.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,381.99 : 59,060.22 = 13,079.67 : x
  2. Step 2: Convert to fraction form
    39,381.99/59,060.22 = 13,079.67/x
  3. Step 3: Cross multiply
    39,381.99x = 59,060.22 × 13,079.67
  4. Step 4: Simplify right side
    39,381.99x = 772,488,187.73
  5. Step 5: Solve for x
    x = 772,488,187.73/39,381.99
  6. Step 6: Final answer
    x = 19,615.27

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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.