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Finding the Fourth Proportional to 217,361.89, 326,043.96 and 98,950.42

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Solution

The fourth proportional to 217,361.89, 326,043.96 and 98,950.42 is: 148,426.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,361.89 : 326,043.96 = 98,950.42 : x
  2. Step 2: Convert to fraction form
    217,361.89/326,043.96 = 98,950.42/x
  3. Step 3: Cross multiply
    217,361.89x = 326,043.96 × 98,950.42
  4. Step 4: Simplify right side
    217,361.89x = 32,262,186,780.46
  5. Step 5: Solve for x
    x = 32,262,186,780.46/217,361.89
  6. Step 6: Final answer
    x = 148,426.14

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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.