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Finding the Fourth Proportional to 551,172.93, 826,767.70 and 191,355.21

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Solution

The fourth proportional to 551,172.93, 826,767.70 and 191,355.21 is: 287,035.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,172.93 : 826,767.70 = 191,355.21 : x
  2. Step 2: Convert to fraction form
    551,172.93/826,767.70 = 191,355.21/x
  3. Step 3: Cross multiply
    551,172.93x = 826,767.70 × 191,355.21
  4. Step 4: Simplify right side
    551,172.93x = 158,206,306,854.72
  5. Step 5: Solve for x
    x = 158,206,306,854.72/551,172.93
  6. Step 6: Final answer
    x = 287,035.70

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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.