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Finding the Fourth Proportional to 217,741.70, 326,612.58 and 67,994.81

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Solution

The fourth proportional to 217,741.70, 326,612.58 and 67,994.81 is: 101,992.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,741.70 : 326,612.58 = 67,994.81 : x
  2. Step 2: Convert to fraction form
    217,741.70/326,612.58 = 67,994.81/x
  3. Step 3: Cross multiply
    217,741.70x = 326,612.58 × 67,994.81
  4. Step 4: Simplify right side
    217,741.70x = 22,207,960,320.71
  5. Step 5: Solve for x
    x = 22,207,960,320.71/217,741.70
  6. Step 6: Final answer
    x = 101,992.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.