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Finding the Fourth Proportional to 122,443.92, 168,975.12 and 68,732.84

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Solution

The fourth proportional to 122,443.92, 168,975.12 and 68,732.84 is: 94,852.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,443.92 : 168,975.12 = 68,732.84 : x
  2. Step 2: Convert to fraction form
    122,443.92/168,975.12 = 68,732.84/x
  3. Step 3: Cross multiply
    122,443.92x = 168,975.12 × 68,732.84
  4. Step 4: Simplify right side
    122,443.92x = 11,614,139,886.94
  5. Step 5: Solve for x
    x = 11,614,139,886.94/122,443.92
  6. Step 6: Final answer
    x = 94,852.73

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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.