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Finding the Fourth Proportional to 120,410.67, 180,732.65 and 58,124.91

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Solution

The fourth proportional to 120,410.67, 180,732.65 and 58,124.91 is: 87,243.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,410.67 : 180,732.65 = 58,124.91 : x
  2. Step 2: Convert to fraction form
    120,410.67/180,732.65 = 58,124.91/x
  3. Step 3: Cross multiply
    120,410.67x = 180,732.65 × 58,124.91
  4. Step 4: Simplify right side
    120,410.67x = 10,505,068,724.69
  5. Step 5: Solve for x
    x = 10,505,068,724.69/120,410.67
  6. Step 6: Final answer
    x = 87,243.67

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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.