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Finding the Fourth Proportional to 171,754, 236,939.88 and 121,480.72

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Solution

The fourth proportional to 171,754, 236,939.88 and 121,480.72 is: 167,586.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,754 : 236,939.88 = 121,480.72 : x
  2. Step 2: Convert to fraction form
    171,754/236,939.88 = 121,480.72/x
  3. Step 3: Cross multiply
    171,754x = 236,939.88 × 121,480.72
  4. Step 4: Simplify right side
    171,754x = 28,783,627,219.11
  5. Step 5: Solve for x
    x = 28,783,627,219.11/171,754
  6. Step 6: Final answer
    x = 167,586.36

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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.