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Finding the Fourth Proportional to 662,136.20, 993,204.30 and 620,664.20

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Solution

The fourth proportional to 662,136.20, 993,204.30 and 620,664.20 is: 930,996.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,136.20 : 993,204.30 = 620,664.20 : x
  2. Step 2: Convert to fraction form
    662,136.20/993,204.30 = 620,664.20/x
  3. Step 3: Cross multiply
    662,136.20x = 993,204.30 × 620,664.20
  4. Step 4: Simplify right side
    662,136.20x = 616,446,352,296.06
  5. Step 5: Solve for x
    x = 616,446,352,296.06/662,136.20
  6. Step 6: Final answer
    x = 930,996.30

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Half scale
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Double scale
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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.