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Finding the Fourth Proportional to 356,606.40, 534,933.90 and 113,428.20

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Solution

The fourth proportional to 356,606.40, 534,933.90 and 113,428.20 is: 170,150.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,606.40 : 534,933.90 = 113,428.20 : x
  2. Step 2: Convert to fraction form
    356,606.40/534,933.90 = 113,428.20/x
  3. Step 3: Cross multiply
    356,606.40x = 534,933.90 × 113,428.20
  4. Step 4: Simplify right side
    356,606.40x = 60,676,589,395.98
  5. Step 5: Solve for x
    x = 60,676,589,395.98/356,606.40
  6. Step 6: Final answer
    x = 170,150.03

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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.