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Finding the Fourth Proportional to 192,958.61, 289,536.75 and 91,871.06

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Solution

The fourth proportional to 192,958.61, 289,536.75 and 91,871.06 is: 137,853.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,958.61 : 289,536.75 = 91,871.06 : x
  2. Step 2: Convert to fraction form
    192,958.61/289,536.75 = 91,871.06/x
  3. Step 3: Cross multiply
    192,958.61x = 289,536.75 × 91,871.06
  4. Step 4: Simplify right side
    192,958.61x = 26,600,046,683.77
  5. Step 5: Solve for x
    x = 26,600,046,683.77/192,958.61
  6. Step 6: Final answer
    x = 137,853.64

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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.