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Finding the Fourth Proportional to 339,564.44, 468,403.79 and 212,018.60

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Solution

The fourth proportional to 339,564.44, 468,403.79 and 212,018.60 is: 292,463.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,564.44 : 468,403.79 = 212,018.60 : x
  2. Step 2: Convert to fraction form
    339,564.44/468,403.79 = 212,018.60/x
  3. Step 3: Cross multiply
    339,564.44x = 468,403.79 × 212,018.60
  4. Step 4: Simplify right side
    339,564.44x = 99,310,315,901.41
  5. Step 5: Solve for x
    x = 99,310,315,901.41/339,564.44
  6. Step 6: Final answer
    x = 292,463.83

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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.