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Finding the Fourth Proportional to 518,922.88, 778,384.32 and 400,766.56

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Solution

The fourth proportional to 518,922.88, 778,384.32 and 400,766.56 is: 601,149.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,922.88 : 778,384.32 = 400,766.56 : x
  2. Step 2: Convert to fraction form
    518,922.88/778,384.32 = 400,766.56/x
  3. Step 3: Cross multiply
    518,922.88x = 778,384.32 × 400,766.56
  4. Step 4: Simplify right side
    518,922.88x = 311,950,406,284.34
  5. Step 5: Solve for x
    x = 311,950,406,284.34/518,922.88
  6. Step 6: Final answer
    x = 601,149.84

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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.