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Finding the Fourth Proportional to 534,404.70, 802,060.65 and 219,087.90

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Solution

The fourth proportional to 534,404.70, 802,060.65 and 219,087.90 is: 328,817.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,404.70 : 802,060.65 = 219,087.90 : x
  2. Step 2: Convert to fraction form
    534,404.70/802,060.65 = 219,087.90/x
  3. Step 3: Cross multiply
    534,404.70x = 802,060.65 × 219,087.90
  4. Step 4: Simplify right side
    534,404.70x = 175,721,783,481.14
  5. Step 5: Solve for x
    x = 175,721,783,481.14/534,404.70
  6. Step 6: Final answer
    x = 328,817.81

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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.