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Finding the Fourth Proportional to 123,998.94, 186,022.35 and 52,920.54

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Solution

The fourth proportional to 123,998.94, 186,022.35 and 52,920.54 is: 79,391.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,998.94 : 186,022.35 = 52,920.54 : x
  2. Step 2: Convert to fraction form
    123,998.94/186,022.35 = 52,920.54/x
  3. Step 3: Cross multiply
    123,998.94x = 186,022.35 × 52,920.54
  4. Step 4: Simplify right side
    123,998.94x = 9,844,403,214.07
  5. Step 5: Solve for x
    x = 9,844,403,214.07/123,998.94
  6. Step 6: Final answer
    x = 79,391.03

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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.