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Finding the Fourth Proportional to 122,360.02, 168,858 and 68,646.20

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Solution

The fourth proportional to 122,360.02, 168,858 and 68,646.20 is: 94,732.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,360.02 : 168,858 = 68,646.20 : x
  2. Step 2: Convert to fraction form
    122,360.02/168,858 = 68,646.20/x
  3. Step 3: Cross multiply
    122,360.02x = 168,858 × 68,646.20
  4. Step 4: Simplify right side
    122,360.02x = 11,591,460,039.60
  5. Step 5: Solve for x
    x = 11,591,460,039.60/122,360.02
  6. Step 6: Final answer
    x = 94,732.41

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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.