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Finding the Fourth Proportional to 626,745.60, 940,269.60 and 205,999.20

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Solution

The fourth proportional to 626,745.60, 940,269.60 and 205,999.20 is: 309,048.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,745.60 : 940,269.60 = 205,999.20 : x
  2. Step 2: Convert to fraction form
    626,745.60/940,269.60 = 205,999.20/x
  3. Step 3: Cross multiply
    626,745.60x = 940,269.60 × 205,999.20
  4. Step 4: Simplify right side
    626,745.60x = 193,694,785,384.32
  5. Step 5: Solve for x
    x = 193,694,785,384.32/626,745.60
  6. Step 6: Final answer
    x = 309,048.50

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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.