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Finding the Fourth Proportional to 609,161.70, 840,379.20 and 367,309.92

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Solution

The fourth proportional to 609,161.70, 840,379.20 and 367,309.92 is: 506,728.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,161.70 : 840,379.20 = 367,309.92 : x
  2. Step 2: Convert to fraction form
    609,161.70/840,379.20 = 367,309.92/x
  3. Step 3: Cross multiply
    609,161.70x = 840,379.20 × 367,309.92
  4. Step 4: Simplify right side
    609,161.70x = 308,679,620,561.79
  5. Step 5: Solve for x
    x = 308,679,620,561.79/609,161.70
  6. Step 6: Final answer
    x = 506,728.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.