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Finding the Fourth Proportional to 627,738.40, 941,607.60 and 576,128.80

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Solution

The fourth proportional to 627,738.40, 941,607.60 and 576,128.80 is: 864,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,738.40 : 941,607.60 = 576,128.80 : x
  2. Step 2: Convert to fraction form
    627,738.40/941,607.60 = 576,128.80/x
  3. Step 3: Cross multiply
    627,738.40x = 941,607.60 × 576,128.80
  4. Step 4: Simplify right side
    627,738.40x = 542,487,256,658.88
  5. Step 5: Solve for x
    x = 542,487,256,658.88/627,738.40
  6. Step 6: Final answer
    x = 864,193.20

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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.