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Finding the Fourth Proportional to 92,844.64, 128,128.24 and 50,405.94

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Solution

The fourth proportional to 92,844.64, 128,128.24 and 50,405.94 is: 69,561.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,844.64 : 128,128.24 = 50,405.94 : x
  2. Step 2: Convert to fraction form
    92,844.64/128,128.24 = 50,405.94/x
  3. Step 3: Cross multiply
    92,844.64x = 128,128.24 × 50,405.94
  4. Step 4: Simplify right side
    92,844.64x = 6,458,424,377.75
  5. Step 5: Solve for x
    x = 6,458,424,377.75/92,844.64
  6. Step 6: Final answer
    x = 69,561.63

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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.