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Finding the Fourth Proportional to 519,195.94, 716,814.77 and 398,104.62

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Solution

The fourth proportional to 519,195.94, 716,814.77 and 398,104.62 is: 549,633.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,195.94 : 716,814.77 = 398,104.62 : x
  2. Step 2: Convert to fraction form
    519,195.94/716,814.77 = 398,104.62/x
  3. Step 3: Cross multiply
    519,195.94x = 716,814.77 × 398,104.62
  4. Step 4: Simplify right side
    519,195.94x = 285,367,271,621.24
  5. Step 5: Solve for x
    x = 285,367,271,621.24/519,195.94
  6. Step 6: Final answer
    x = 549,633.10

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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.