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Finding the Fourth Proportional to 669,893.72, 1,004,893.22 and 190,113.91

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Solution

The fourth proportional to 669,893.72, 1,004,893.22 and 190,113.91 is: 285,185.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,893.72 : 1,004,893.22 = 190,113.91 : x
  2. Step 2: Convert to fraction form
    669,893.72/1,004,893.22 = 190,113.91/x
  3. Step 3: Cross multiply
    669,893.72x = 1,004,893.22 × 190,113.91
  4. Step 4: Simplify right side
    669,893.72x = 191,044,177,149.74
  5. Step 5: Solve for x
    x = 191,044,177,149.74/669,893.72
  6. Step 6: Final answer
    x = 285,185.80

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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.