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Finding the Fourth Proportional to 122,079.92, 168,468.30 and 68,364.46

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Solution

The fourth proportional to 122,079.92, 168,468.30 and 68,364.46 is: 94,341.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,079.92 : 168,468.30 = 68,364.46 : x
  2. Step 2: Convert to fraction form
    122,079.92/168,468.30 = 68,364.46/x
  3. Step 3: Cross multiply
    122,079.92x = 168,468.30 × 68,364.46
  4. Step 4: Simplify right side
    122,079.92x = 11,517,244,356.62
  5. Step 5: Solve for x
    x = 11,517,244,356.62/122,079.92
  6. Step 6: Final answer
    x = 94,341.84

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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.