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Finding the Fourth Proportional to 90,361.92, 124,700.61 and 50,076.48

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Solution

The fourth proportional to 90,361.92, 124,700.61 and 50,076.48 is: 69,106.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,361.92 : 124,700.61 = 50,076.48 : x
  2. Step 2: Convert to fraction form
    90,361.92/124,700.61 = 50,076.48/x
  3. Step 3: Cross multiply
    90,361.92x = 124,700.61 × 50,076.48
  4. Step 4: Simplify right side
    90,361.92x = 6,244,567,602.65
  5. Step 5: Solve for x
    x = 6,244,567,602.65/90,361.92
  6. Step 6: Final answer
    x = 69,106.19

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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.