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Finding the Fourth Proportional to 518,005.85, 777,114.26 and 218,487.54

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Solution

The fourth proportional to 518,005.85, 777,114.26 and 218,487.54 is: 327,775.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,005.85 : 777,114.26 = 218,487.54 : x
  2. Step 2: Convert to fraction form
    518,005.85/777,114.26 = 218,487.54/x
  3. Step 3: Cross multiply
    518,005.85x = 777,114.26 × 218,487.54
  4. Step 4: Simplify right side
    518,005.85x = 169,789,781,873.88
  5. Step 5: Solve for x
    x = 169,789,781,873.88/518,005.85
  6. Step 6: Final answer
    x = 327,775.80

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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.