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Finding the Fourth Proportional to 173,286.81, 259,338.81 and 145,238.53

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Solution

The fourth proportional to 173,286.81, 259,338.81 and 145,238.53 is: 217,362.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,286.81 : 259,338.81 = 145,238.53 : x
  2. Step 2: Convert to fraction form
    173,286.81/259,338.81 = 145,238.53/x
  3. Step 3: Cross multiply
    173,286.81x = 259,338.81 × 145,238.53
  4. Step 4: Simplify right side
    173,286.81x = 37,665,987,536.35
  5. Step 5: Solve for x
    x = 37,665,987,536.35/173,286.81
  6. Step 6: Final answer
    x = 217,362.12

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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.