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Finding the Fourth Proportional to 621,879.59, 932,819.39 and 343,168.31

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Solution

The fourth proportional to 621,879.59, 932,819.39 and 343,168.31 is: 514,752.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,879.59 : 932,819.39 = 343,168.31 : x
  2. Step 2: Convert to fraction form
    621,879.59/932,819.39 = 343,168.31/x
  3. Step 3: Cross multiply
    621,879.59x = 932,819.39 × 343,168.31
  4. Step 4: Simplify right side
    621,879.59x = 320,114,053,601.53
  5. Step 5: Solve for x
    x = 320,114,053,601.53/621,879.59
  6. Step 6: Final answer
    x = 514,752.47

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Half scale
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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.