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Finding the Fourth Proportional to 328,680.90, 493,039.29 and 104,024.57

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Solution

The fourth proportional to 328,680.90, 493,039.29 and 104,024.57 is: 156,042.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,680.90 : 493,039.29 = 104,024.57 : x
  2. Step 2: Convert to fraction form
    328,680.90/493,039.29 = 104,024.57/x
  3. Step 3: Cross multiply
    328,680.90x = 493,039.29 × 104,024.57
  4. Step 4: Simplify right side
    328,680.90x = 51,288,201,628.02
  5. Step 5: Solve for x
    x = 51,288,201,628.02/328,680.90
  6. Step 6: Final answer
    x = 156,042.54

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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.