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Finding the Fourth Proportional to 519,976.32, 717,568.64 and 281,512.32

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Solution

The fourth proportional to 519,976.32, 717,568.64 and 281,512.32 is: 388,487.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,976.32 : 717,568.64 = 281,512.32 : x
  2. Step 2: Convert to fraction form
    519,976.32/717,568.64 = 281,512.32/x
  3. Step 3: Cross multiply
    519,976.32x = 717,568.64 × 281,512.32
  4. Step 4: Simplify right side
    519,976.32x = 202,004,412,605.65
  5. Step 5: Solve for x
    x = 202,004,412,605.65/519,976.32
  6. Step 6: Final answer
    x = 388,487.72

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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.