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Finding the Fourth Proportional to 518,610.72, 777,916.80 and 341,906.88

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Solution

The fourth proportional to 518,610.72, 777,916.80 and 341,906.88 is: 512,860.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,610.72 : 777,916.80 = 341,906.88 : x
  2. Step 2: Convert to fraction form
    518,610.72/777,916.80 = 341,906.88/x
  3. Step 3: Cross multiply
    518,610.72x = 777,916.80 × 341,906.88
  4. Step 4: Simplify right side
    518,610.72x = 265,975,105,987.58
  5. Step 5: Solve for x
    x = 265,975,105,987.58/518,610.72
  6. Step 6: Final answer
    x = 512,860.79

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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.