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Finding the Fourth Proportional to 135,782.76, 203,671.90 and 55,804.52

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Solution

The fourth proportional to 135,782.76, 203,671.90 and 55,804.52 is: 83,705.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,782.76 : 203,671.90 = 55,804.52 : x
  2. Step 2: Convert to fraction form
    135,782.76/203,671.90 = 55,804.52/x
  3. Step 3: Cross multiply
    135,782.76x = 203,671.90 × 55,804.52
  4. Step 4: Simplify right side
    135,782.76x = 11,365,812,616.99
  5. Step 5: Solve for x
    x = 11,365,812,616.99/135,782.76
  6. Step 6: Final answer
    x = 83,705.86

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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.