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Finding the Fourth Proportional to 530,844.60, 796,266.90 and 478,356.60

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Solution

The fourth proportional to 530,844.60, 796,266.90 and 478,356.60 is: 717,534.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,844.60 : 796,266.90 = 478,356.60 : x
  2. Step 2: Convert to fraction form
    530,844.60/796,266.90 = 478,356.60/x
  3. Step 3: Cross multiply
    530,844.60x = 796,266.90 × 478,356.60
  4. Step 4: Simplify right side
    530,844.60x = 380,899,526,976.54
  5. Step 5: Solve for x
    x = 380,899,526,976.54/530,844.60
  6. Step 6: Final answer
    x = 717,534.90

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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.