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Finding the Fourth Proportional to 124,021.46, 186,028.04 and 53,900.78

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Solution

The fourth proportional to 124,021.46, 186,028.04 and 53,900.78 is: 80,849.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,021.46 : 186,028.04 = 53,900.78 : x
  2. Step 2: Convert to fraction form
    124,021.46/186,028.04 = 53,900.78/x
  3. Step 3: Cross multiply
    124,021.46x = 186,028.04 × 53,900.78
  4. Step 4: Simplify right side
    124,021.46x = 10,027,055,662.48
  5. Step 5: Solve for x
    x = 10,027,055,662.48/124,021.46
  6. Step 6: Final answer
    x = 80,849.36

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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.