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Finding the Fourth Proportional to 519,948.40, 778,610.40 and 341,489.20

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Solution

The fourth proportional to 519,948.40, 778,610.40 and 341,489.20 is: 511,371.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,948.40 : 778,610.40 = 341,489.20 : x
  2. Step 2: Convert to fraction form
    519,948.40/778,610.40 = 341,489.20/x
  3. Step 3: Cross multiply
    519,948.40x = 778,610.40 × 341,489.20
  4. Step 4: Simplify right side
    519,948.40x = 265,887,042,607.68
  5. Step 5: Solve for x
    x = 265,887,042,607.68/519,948.40
  6. Step 6: Final answer
    x = 511,371.98

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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.