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Finding the Fourth Proportional to 203,378.76, 305,048.70 and 124,452.36

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Solution

The fourth proportional to 203,378.76, 305,048.70 and 124,452.36 is: 186,666.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,378.76 : 305,048.70 = 124,452.36 : x
  2. Step 2: Convert to fraction form
    203,378.76/305,048.70 = 124,452.36/x
  3. Step 3: Cross multiply
    203,378.76x = 305,048.70 × 124,452.36
  4. Step 4: Simplify right side
    203,378.76x = 37,964,030,629.93
  5. Step 5: Solve for x
    x = 37,964,030,629.93/203,378.76
  6. Step 6: Final answer
    x = 186,666.64

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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.