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Finding the Fourth Proportional to 92,787.02, 128,042.64 and 50,344.64

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Solution

The fourth proportional to 92,787.02, 128,042.64 and 50,344.64 is: 69,473.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,787.02 : 128,042.64 = 50,344.64 : x
  2. Step 2: Convert to fraction form
    92,787.02/128,042.64 = 50,344.64/x
  3. Step 3: Cross multiply
    92,787.02x = 128,042.64 × 50,344.64
  4. Step 4: Simplify right side
    92,787.02x = 6,446,260,615.45
  5. Step 5: Solve for x
    x = 6,446,260,615.45/92,787.02
  6. Step 6: Final answer
    x = 69,473.73

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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.