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Finding the Fourth Proportional to 79,048.44, 109,074.13 and 45,057

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Solution

The fourth proportional to 79,048.44, 109,074.13 and 45,057 is: 62,171.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,048.44 : 109,074.13 = 45,057 : x
  2. Step 2: Convert to fraction form
    79,048.44/109,074.13 = 45,057/x
  3. Step 3: Cross multiply
    79,048.44x = 109,074.13 × 45,057
  4. Step 4: Simplify right side
    79,048.44x = 4,914,553,075.41
  5. Step 5: Solve for x
    x = 4,914,553,075.41/79,048.44
  6. Step 6: Final answer
    x = 62,171.41

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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.