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Finding the Fourth Proportional to 121,714.08, 167,971.92 and 68,000.16

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Solution

The fourth proportional to 121,714.08, 167,971.92 and 68,000.16 is: 93,843.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,714.08 : 167,971.92 = 68,000.16 : x
  2. Step 2: Convert to fraction form
    121,714.08/167,971.92 = 68,000.16/x
  3. Step 3: Cross multiply
    121,714.08x = 167,971.92 × 68,000.16
  4. Step 4: Simplify right side
    121,714.08x = 11,422,117,435.51
  5. Step 5: Solve for x
    x = 11,422,117,435.51/121,714.08
  6. Step 6: Final answer
    x = 93,843.85

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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.