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Finding the Fourth Proportional to 219,754.92, 329,640.48 and 61,987.59

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Solution

The fourth proportional to 219,754.92, 329,640.48 and 61,987.59 is: 92,983.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,754.92 : 329,640.48 = 61,987.59 : x
  2. Step 2: Convert to fraction form
    219,754.92/329,640.48 = 61,987.59/x
  3. Step 3: Cross multiply
    219,754.92x = 329,640.48 × 61,987.59
  4. Step 4: Simplify right side
    219,754.92x = 20,433,618,921.64
  5. Step 5: Solve for x
    x = 20,433,618,921.64/219,754.92
  6. Step 6: Final answer
    x = 92,983.67

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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.