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Finding the Fourth Proportional to 398,562.48, 550,012.62 and 219,714.48

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Solution

The fourth proportional to 398,562.48, 550,012.62 and 219,714.48 is: 303,204.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,562.48 : 550,012.62 = 219,714.48 : x
  2. Step 2: Convert to fraction form
    398,562.48/550,012.62 = 219,714.48/x
  3. Step 3: Cross multiply
    398,562.48x = 550,012.62 × 219,714.48
  4. Step 4: Simplify right side
    398,562.48x = 120,845,737,347.84
  5. Step 5: Solve for x
    x = 120,845,737,347.84/398,562.48
  6. Step 6: Final answer
    x = 303,204.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.