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Finding the Fourth Proportional to 519,196.44, 716,815.46 and 398,105.12

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Solution

The fourth proportional to 519,196.44, 716,815.46 and 398,105.12 is: 549,633.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,196.44 : 716,815.46 = 398,105.12 : x
  2. Step 2: Convert to fraction form
    519,196.44/716,815.46 = 398,105.12/x
  3. Step 3: Cross multiply
    519,196.44x = 716,815.46 × 398,105.12
  4. Step 4: Simplify right side
    519,196.44x = 285,367,904,721.16
  5. Step 5: Solve for x
    x = 285,367,904,721.16/519,196.44
  6. Step 6: Final answer
    x = 549,633.79

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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.