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Finding the Fourth Proportional to 344,437.20, 515,734.20 and 219,099.60

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Solution

The fourth proportional to 344,437.20, 515,734.20 and 219,099.60 is: 328,063.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,437.20 : 515,734.20 = 219,099.60 : x
  2. Step 2: Convert to fraction form
    344,437.20/515,734.20 = 219,099.60/x
  3. Step 3: Cross multiply
    344,437.20x = 515,734.20 × 219,099.60
  4. Step 4: Simplify right side
    344,437.20x = 112,997,156,926.32
  5. Step 5: Solve for x
    x = 112,997,156,926.32/344,437.20
  6. Step 6: Final answer
    x = 328,063.16

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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.