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Finding the Fourth Proportional to 122,506.44, 169,056.84 and 68,791.56

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Solution

The fourth proportional to 122,506.44, 169,056.84 and 68,791.56 is: 94,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,506.44 : 169,056.84 = 68,791.56 : x
  2. Step 2: Convert to fraction form
    122,506.44/169,056.84 = 68,791.56/x
  3. Step 3: Cross multiply
    122,506.44x = 169,056.84 × 68,791.56
  4. Step 4: Simplify right side
    122,506.44x = 11,629,683,752.27
  5. Step 5: Solve for x
    x = 11,629,683,752.27/122,506.44
  6. Step 6: Final answer
    x = 94,931.20

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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.