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Finding the Fourth Proportional to 519,428.89, 779,165.61 and 203,954.14

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Solution

The fourth proportional to 519,428.89, 779,165.61 and 203,954.14 is: 305,939.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,428.89 : 779,165.61 = 203,954.14 : x
  2. Step 2: Convert to fraction form
    519,428.89/779,165.61 = 203,954.14/x
  3. Step 3: Cross multiply
    519,428.89x = 779,165.61 × 203,954.14
  4. Step 4: Simplify right side
    519,428.89x = 158,914,051,905.13
  5. Step 5: Solve for x
    x = 158,914,051,905.13/519,428.89
  6. Step 6: Final answer
    x = 305,939.96

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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.