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Finding the Fourth Proportional to 519,136.90, 778,851.15 and 252,906.10

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Solution

The fourth proportional to 519,136.90, 778,851.15 and 252,906.10 is: 379,430.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,136.90 : 778,851.15 = 252,906.10 : x
  2. Step 2: Convert to fraction form
    519,136.90/778,851.15 = 252,906.10/x
  3. Step 3: Cross multiply
    519,136.90x = 778,851.15 × 252,906.10
  4. Step 4: Simplify right side
    519,136.90x = 196,976,206,827.02
  5. Step 5: Solve for x
    x = 196,976,206,827.02/519,136.90
  6. Step 6: Final answer
    x = 379,430.18

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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.