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Finding the Fourth Proportional to 518,733.92, 778,100.80 and 400,577.60

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Solution

The fourth proportional to 518,733.92, 778,100.80 and 400,577.60 is: 600,866.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,733.92 : 778,100.80 = 400,577.60 : x
  2. Step 2: Convert to fraction form
    518,733.92/778,100.80 = 400,577.60/x
  3. Step 3: Cross multiply
    518,733.92x = 778,100.80 × 400,577.60
  4. Step 4: Simplify right side
    518,733.92x = 311,689,751,022.08
  5. Step 5: Solve for x
    x = 311,689,751,022.08/518,733.92
  6. Step 6: Final answer
    x = 600,866.34

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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.