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Finding the Fourth Proportional to 443,391.54, 665,185.68 and 127,823.82

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Solution

The fourth proportional to 443,391.54, 665,185.68 and 127,823.82 is: 191,764.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,391.54 : 665,185.68 = 127,823.82 : x
  2. Step 2: Convert to fraction form
    443,391.54/665,185.68 = 127,823.82/x
  3. Step 3: Cross multiply
    443,391.54x = 665,185.68 × 127,823.82
  4. Step 4: Simplify right side
    443,391.54x = 85,026,574,626.90
  5. Step 5: Solve for x
    x = 85,026,574,626.90/443,391.54
  6. Step 6: Final answer
    x = 191,764.09

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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.