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Finding the Fourth Proportional to 253,958.28, 380,933.54 and 61,834.50

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Solution

The fourth proportional to 253,958.28, 380,933.54 and 61,834.50 is: 92,750.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,958.28 : 380,933.54 = 61,834.50 : x
  2. Step 2: Convert to fraction form
    253,958.28/380,933.54 = 61,834.50/x
  3. Step 3: Cross multiply
    253,958.28x = 380,933.54 × 61,834.50
  4. Step 4: Simplify right side
    253,958.28x = 23,554,834,979.13
  5. Step 5: Solve for x
    x = 23,554,834,979.13/253,958.28
  6. Step 6: Final answer
    x = 92,750.81

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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.