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Finding the Fourth Proportional to 122,286.70, 183,462.45 and 43,392.70

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Solution

The fourth proportional to 122,286.70, 183,462.45 and 43,392.70 is: 65,100.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,286.70 : 183,462.45 = 43,392.70 : x
  2. Step 2: Convert to fraction form
    122,286.70/183,462.45 = 43,392.70/x
  3. Step 3: Cross multiply
    122,286.70x = 183,462.45 × 43,392.70
  4. Step 4: Simplify right side
    122,286.70x = 7,960,931,054.12
  5. Step 5: Solve for x
    x = 7,960,931,054.12/122,286.70
  6. Step 6: Final answer
    x = 65,100.55

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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.