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Finding the Fourth Proportional to 644,083.80, 966,125.70 and 616,781.40

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Solution

The fourth proportional to 644,083.80, 966,125.70 and 616,781.40 is: 925,172.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,083.80 : 966,125.70 = 616,781.40 : x
  2. Step 2: Convert to fraction form
    644,083.80/966,125.70 = 616,781.40/x
  3. Step 3: Cross multiply
    644,083.80x = 966,125.70 × 616,781.40
  4. Step 4: Simplify right side
    644,083.80x = 595,888,361,821.98
  5. Step 5: Solve for x
    x = 595,888,361,821.98/644,083.80
  6. Step 6: Final answer
    x = 925,172.10

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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.