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Finding the Fourth Proportional to 122,114.81, 168,517.44 and 68,400.33

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Solution

The fourth proportional to 122,114.81, 168,517.44 and 68,400.33 is: 94,391.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,114.81 : 168,517.44 = 68,400.33 : x
  2. Step 2: Convert to fraction form
    122,114.81/168,517.44 = 68,400.33/x
  3. Step 3: Cross multiply
    122,114.81x = 168,517.44 × 68,400.33
  4. Step 4: Simplify right side
    122,114.81x = 11,526,648,506.76
  5. Step 5: Solve for x
    x = 11,526,648,506.76/122,114.81
  6. Step 6: Final answer
    x = 94,391.90

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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.