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Finding the Fourth Proportional to 519,116.80, 778,893.90 and 282,629.20

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Solution

The fourth proportional to 519,116.80, 778,893.90 and 282,629.20 is: 424,062.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,116.80 : 778,893.90 = 282,629.20 : x
  2. Step 2: Convert to fraction form
    519,116.80/778,893.90 = 282,629.20/x
  3. Step 3: Cross multiply
    519,116.80x = 778,893.90 × 282,629.20
  4. Step 4: Simplify right side
    519,116.80x = 220,138,159,841.88
  5. Step 5: Solve for x
    x = 220,138,159,841.88/519,116.80
  6. Step 6: Final answer
    x = 424,062.87

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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.