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Finding the Fourth Proportional to 122,155.20, 183,265.20 and 43,261.20

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Solution

The fourth proportional to 122,155.20, 183,265.20 and 43,261.20 is: 64,903.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,155.20 : 183,265.20 = 43,261.20 : x
  2. Step 2: Convert to fraction form
    122,155.20/183,265.20 = 43,261.20/x
  3. Step 3: Cross multiply
    122,155.20x = 183,265.20 × 43,261.20
  4. Step 4: Simplify right side
    122,155.20x = 7,928,272,470.24
  5. Step 5: Solve for x
    x = 7,928,272,470.24/122,155.20
  6. Step 6: Final answer
    x = 64,903.27

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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.