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Finding the Fourth Proportional to 92,832, 128,124.36 and 55,105.44

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Solution

The fourth proportional to 92,832, 128,124.36 and 55,105.44 is: 76,055.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,832 : 128,124.36 = 55,105.44 : x
  2. Step 2: Convert to fraction form
    92,832/128,124.36 = 55,105.44/x
  3. Step 3: Cross multiply
    92,832x = 128,124.36 × 55,105.44
  4. Step 4: Simplify right side
    92,832x = 7,060,349,232.52
  5. Step 5: Solve for x
    x = 7,060,349,232.52/92,832
  6. Step 6: Final answer
    x = 76,055.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.