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Finding the Fourth Proportional to 122,791.64, 169,462.30 and 69,073.45

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Solution

The fourth proportional to 122,791.64, 169,462.30 and 69,073.45 is: 95,326.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,791.64 : 169,462.30 = 69,073.45 : x
  2. Step 2: Convert to fraction form
    122,791.64/169,462.30 = 69,073.45/x
  3. Step 3: Cross multiply
    122,791.64x = 169,462.30 × 69,073.45
  4. Step 4: Simplify right side
    122,791.64x = 11,705,345,878.62
  5. Step 5: Solve for x
    x = 11,705,345,878.62/122,791.64
  6. Step 6: Final answer
    x = 95,326.90

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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.