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Finding the Fourth Proportional to 57,213.98, 79,019.94 and 39,033.49

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Solution

The fourth proportional to 57,213.98, 79,019.94 and 39,033.49 is: 53,910.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,213.98 : 79,019.94 = 39,033.49 : x
  2. Step 2: Convert to fraction form
    57,213.98/79,019.94 = 39,033.49/x
  3. Step 3: Cross multiply
    57,213.98x = 79,019.94 × 39,033.49
  4. Step 4: Simplify right side
    57,213.98x = 3,084,423,842.62
  5. Step 5: Solve for x
    x = 3,084,423,842.62/57,213.98
  6. Step 6: Final answer
    x = 53,910.32

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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.