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Finding the Fourth Proportional to 122,989.66, 184,366.83 and 48,084.91

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Solution

The fourth proportional to 122,989.66, 184,366.83 and 48,084.91 is: 72,081.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,989.66 : 184,366.83 = 48,084.91 : x
  2. Step 2: Convert to fraction form
    122,989.66/184,366.83 = 48,084.91/x
  3. Step 3: Cross multiply
    122,989.66x = 184,366.83 × 48,084.91
  4. Step 4: Simplify right side
    122,989.66x = 8,865,262,146.94
  5. Step 5: Solve for x
    x = 8,865,262,146.94/122,989.66
  6. Step 6: Final answer
    x = 72,081.36

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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.