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Finding the Fourth Proportional to 122,512.88, 183,723.96 and 43,605.92

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Solution

The fourth proportional to 122,512.88, 183,723.96 and 43,605.92 is: 65,392.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,512.88 : 183,723.96 = 43,605.92 : x
  2. Step 2: Convert to fraction form
    122,512.88/183,723.96 = 43,605.92/x
  3. Step 3: Cross multiply
    122,512.88x = 183,723.96 × 43,605.92
  4. Step 4: Simplify right side
    122,512.88x = 8,011,452,301.84
  5. Step 5: Solve for x
    x = 8,011,452,301.84/122,512.88
  6. Step 6: Final answer
    x = 65,392.74

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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.