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Finding the Fourth Proportional to 121,743.06, 168,005.06 and 68,028.13

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Solution

The fourth proportional to 121,743.06, 168,005.06 and 68,028.13 is: 93,878.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,743.06 : 168,005.06 = 68,028.13 : x
  2. Step 2: Convert to fraction form
    121,743.06/168,005.06 = 68,028.13/x
  3. Step 3: Cross multiply
    121,743.06x = 168,005.06 × 68,028.13
  4. Step 4: Simplify right side
    121,743.06x = 11,429,069,302.18
  5. Step 5: Solve for x
    x = 11,429,069,302.18/121,743.06
  6. Step 6: Final answer
    x = 93,878.61

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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.