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Finding the Fourth Proportional to 79,589.49, 109,836.44 and 43,782.23

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Solution

The fourth proportional to 79,589.49, 109,836.44 and 43,782.23 is: 60,421.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,589.49 : 109,836.44 = 43,782.23 : x
  2. Step 2: Convert to fraction form
    79,589.49/109,836.44 = 43,782.23/x
  3. Step 3: Cross multiply
    79,589.49x = 109,836.44 × 43,782.23
  4. Step 4: Simplify right side
    79,589.49x = 4,808,883,510.37
  5. Step 5: Solve for x
    x = 4,808,883,510.37/79,589.49
  6. Step 6: Final answer
    x = 60,421.09

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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.