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Finding the Fourth Proportional to 122,272.68, 168,743.22 and 68,574.84

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Solution

The fourth proportional to 122,272.68, 168,743.22 and 68,574.84 is: 94,637.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,272.68 : 168,743.22 = 68,574.84 : x
  2. Step 2: Convert to fraction form
    122,272.68/168,743.22 = 68,574.84/x
  3. Step 3: Cross multiply
    122,272.68x = 168,743.22 × 68,574.84
  4. Step 4: Simplify right side
    122,272.68x = 11,571,539,312.58
  5. Step 5: Solve for x
    x = 11,571,539,312.58/122,272.68
  6. Step 6: Final answer
    x = 94,637.16

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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.