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Finding the Fourth Proportional to 70,299.81, 105,381.95 and 25,902.27

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Solution

The fourth proportional to 70,299.81, 105,381.95 and 25,902.27 is: 38,828.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,299.81 : 105,381.95 = 25,902.27 : x
  2. Step 2: Convert to fraction form
    70,299.81/105,381.95 = 25,902.27/x
  3. Step 3: Cross multiply
    70,299.81x = 105,381.95 × 25,902.27
  4. Step 4: Simplify right side
    70,299.81x = 2,729,631,592.52
  5. Step 5: Solve for x
    x = 2,729,631,592.52/70,299.81
  6. Step 6: Final answer
    x = 38,828.43

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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.