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Finding the Fourth Proportional to 50,908.60, 76,435.80 and 38,515.60

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Solution

The fourth proportional to 50,908.60, 76,435.80 and 38,515.60 is: 57,828.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,908.60 : 76,435.80 = 38,515.60 : x
  2. Step 2: Convert to fraction form
    50,908.60/76,435.80 = 38,515.60/x
  3. Step 3: Cross multiply
    50,908.60x = 76,435.80 × 38,515.60
  4. Step 4: Simplify right side
    50,908.60x = 2,943,970,698.48
  5. Step 5: Solve for x
    x = 2,943,970,698.48/50,908.60
  6. Step 6: Final answer
    x = 57,828.55

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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.