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Finding the Fourth Proportional to 159,581.81, 239,408.24 and 69,639.04

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Solution

The fourth proportional to 159,581.81, 239,408.24 and 69,639.04 is: 104,474.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,581.81 : 239,408.24 = 69,639.04 : x
  2. Step 2: Convert to fraction form
    159,581.81/239,408.24 = 69,639.04/x
  3. Step 3: Cross multiply
    159,581.81x = 239,408.24 × 69,639.04
  4. Step 4: Simplify right side
    159,581.81x = 16,672,160,001.69
  5. Step 5: Solve for x
    x = 16,672,160,001.69/159,581.81
  6. Step 6: Final answer
    x = 104,474.06

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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.