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Finding the Fourth Proportional to 122,221.24, 168,664.80 and 68,506.24

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Solution

The fourth proportional to 122,221.24, 168,664.80 and 68,506.24 is: 94,538.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,221.24 : 168,664.80 = 68,506.24 : x
  2. Step 2: Convert to fraction form
    122,221.24/168,664.80 = 68,506.24/x
  3. Step 3: Cross multiply
    122,221.24x = 168,664.80 × 68,506.24
  4. Step 4: Simplify right side
    122,221.24x = 11,554,591,268.35
  5. Step 5: Solve for x
    x = 11,554,591,268.35/122,221.24
  6. Step 6: Final answer
    x = 94,538.32

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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.