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Finding the Fourth Proportional to 121,616.10, 167,881.41 and 73,884.69

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Solution

The fourth proportional to 121,616.10, 167,881.41 and 73,884.69 is: 101,991.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,616.10 : 167,881.41 = 73,884.69 : x
  2. Step 2: Convert to fraction form
    121,616.10/167,881.41 = 73,884.69/x
  3. Step 3: Cross multiply
    121,616.10x = 167,881.41 × 73,884.69
  4. Step 4: Simplify right side
    121,616.10x = 12,403,865,934.61
  5. Step 5: Solve for x
    x = 12,403,865,934.61/121,616.10
  6. Step 6: Final answer
    x = 101,991.97

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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.