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Finding the Fourth Proportional to 518,673.28, 778,092.96 and 219,156.80

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Solution

The fourth proportional to 518,673.28, 778,092.96 and 219,156.80 is: 328,770.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,673.28 : 778,092.96 = 219,156.80 : x
  2. Step 2: Convert to fraction form
    518,673.28/778,092.96 = 219,156.80/x
  3. Step 3: Cross multiply
    518,673.28x = 778,092.96 × 219,156.80
  4. Step 4: Simplify right side
    518,673.28x = 170,524,363,216.13
  5. Step 5: Solve for x
    x = 170,524,363,216.13/518,673.28
  6. Step 6: Final answer
    x = 328,770.29

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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.