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Finding the Fourth Proportional to 122,338.56, 168,669.36 and 82,058.88

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Solution

The fourth proportional to 122,338.56, 168,669.36 and 82,058.88 is: 113,135.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,338.56 : 168,669.36 = 82,058.88 : x
  2. Step 2: Convert to fraction form
    122,338.56/168,669.36 = 82,058.88/x
  3. Step 3: Cross multiply
    122,338.56x = 168,669.36 × 82,058.88
  4. Step 4: Simplify right side
    122,338.56x = 13,840,818,771.92
  5. Step 5: Solve for x
    x = 13,840,818,771.92/122,338.56
  6. Step 6: Final answer
    x = 113,135.37

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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.