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Finding the Fourth Proportional to 662,116.20, 993,174.30 and 620,644.20

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Solution

The fourth proportional to 662,116.20, 993,174.30 and 620,644.20 is: 930,966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,116.20 : 993,174.30 = 620,644.20 : x
  2. Step 2: Convert to fraction form
    662,116.20/993,174.30 = 620,644.20/x
  3. Step 3: Cross multiply
    662,116.20x = 993,174.30 × 620,644.20
  4. Step 4: Simplify right side
    662,116.20x = 616,407,868,884.06
  5. Step 5: Solve for x
    x = 616,407,868,884.06/662,116.20
  6. Step 6: Final answer
    x = 930,966.30

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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.