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Finding the Fourth Proportional to 172,993.41, 238,725.49 and 101,421.10

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Solution

The fourth proportional to 172,993.41, 238,725.49 and 101,421.10 is: 139,957.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,993.41 : 238,725.49 = 101,421.10 : x
  2. Step 2: Convert to fraction form
    172,993.41/238,725.49 = 101,421.10/x
  3. Step 3: Cross multiply
    172,993.41x = 238,725.49 × 101,421.10
  4. Step 4: Simplify right side
    172,993.41x = 24,211,801,793.84
  5. Step 5: Solve for x
    x = 24,211,801,793.84/172,993.41
  6. Step 6: Final answer
    x = 139,957.94

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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.