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Finding the Fourth Proportional to 621,738.80, 932,608.20 and 607,914.80

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Solution

The fourth proportional to 621,738.80, 932,608.20 and 607,914.80 is: 911,872.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,738.80 : 932,608.20 = 607,914.80 : x
  2. Step 2: Convert to fraction form
    621,738.80/932,608.20 = 607,914.80/x
  3. Step 3: Cross multiply
    621,738.80x = 932,608.20 × 607,914.80
  4. Step 4: Simplify right side
    621,738.80x = 566,946,327,381.36
  5. Step 5: Solve for x
    x = 566,946,327,381.36/621,738.80
  6. Step 6: Final answer
    x = 911,872.20

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Similar ratio
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1.5x scale

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.