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Finding the Fourth Proportional to 339,643.50, 468,588.56 and 203,721.45

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Solution

The fourth proportional to 339,643.50, 468,588.56 and 203,721.45 is: 281,063.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,643.50 : 468,588.56 = 203,721.45 : x
  2. Step 2: Convert to fraction form
    339,643.50/468,588.56 = 203,721.45/x
  3. Step 3: Cross multiply
    339,643.50x = 468,588.56 × 203,721.45
  4. Step 4: Simplify right side
    339,643.50x = 95,461,539,878.00
  5. Step 5: Solve for x
    x = 95,461,539,878.00/339,643.50
  6. Step 6: Final answer
    x = 281,063.94

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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.