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Finding the Fourth Proportional to 75,318.99, 103,935.72 and 43,057.09

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Solution

The fourth proportional to 75,318.99, 103,935.72 and 43,057.09 is: 59,416.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,318.99 : 103,935.72 = 43,057.09 : x
  2. Step 2: Convert to fraction form
    75,318.99/103,935.72 = 43,057.09/x
  3. Step 3: Cross multiply
    75,318.99x = 103,935.72 × 43,057.09
  4. Step 4: Simplify right side
    75,318.99x = 4,475,169,650.25
  5. Step 5: Solve for x
    x = 4,475,169,650.25/75,318.99
  6. Step 6: Final answer
    x = 59,416.22

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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.