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Finding the Fourth Proportional to 621,806.80, 932,710.20 and 607,982.80

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Solution

The fourth proportional to 621,806.80, 932,710.20 and 607,982.80 is: 911,974.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,806.80 : 932,710.20 = 607,982.80 : x
  2. Step 2: Convert to fraction form
    621,806.80/932,710.20 = 607,982.80/x
  3. Step 3: Cross multiply
    621,806.80x = 932,710.20 × 607,982.80
  4. Step 4: Simplify right side
    621,806.80x = 567,071,758,984.56
  5. Step 5: Solve for x
    x = 567,071,758,984.56/621,806.80
  6. Step 6: Final answer
    x = 911,974.20

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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.