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Finding the Fourth Proportional to 219,757.92, 329,644.98 and 61,990.59

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Solution

The fourth proportional to 219,757.92, 329,644.98 and 61,990.59 is: 92,988.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,757.92 : 329,644.98 = 61,990.59 : x
  2. Step 2: Convert to fraction form
    219,757.92/329,644.98 = 61,990.59/x
  3. Step 3: Cross multiply
    219,757.92x = 329,644.98 × 61,990.59
  4. Step 4: Simplify right side
    219,757.92x = 20,434,886,800.74
  5. Step 5: Solve for x
    x = 20,434,886,800.74/219,757.92
  6. Step 6: Final answer
    x = 92,988.17

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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.