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Finding the Fourth Proportional to 519,690.75, 717,173.60 and 281,226.75

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Solution

The fourth proportional to 519,690.75, 717,173.60 and 281,226.75 is: 388,093.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,690.75 : 717,173.60 = 281,226.75 : x
  2. Step 2: Convert to fraction form
    519,690.75/717,173.60 = 281,226.75/x
  3. Step 3: Cross multiply
    519,690.75x = 717,173.60 × 281,226.75
  4. Step 4: Simplify right side
    519,690.75x = 201,688,400,713.80
  5. Step 5: Solve for x
    x = 201,688,400,713.80/519,690.75
  6. Step 6: Final answer
    x = 388,093.11

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.