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Finding the Fourth Proportional to 122,765.01, 169,358.51 and 79,741.46

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Solution

The fourth proportional to 122,765.01, 169,358.51 and 79,741.46 is: 110,006.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,765.01 : 169,358.51 = 79,741.46 : x
  2. Step 2: Convert to fraction form
    122,765.01/169,358.51 = 79,741.46/x
  3. Step 3: Cross multiply
    122,765.01x = 169,358.51 × 79,741.46
  4. Step 4: Simplify right side
    122,765.01x = 13,504,893,605.32
  5. Step 5: Solve for x
    x = 13,504,893,605.32/122,765.01
  6. Step 6: Final answer
    x = 110,006.05

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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.