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Finding the Fourth Proportional to 92,796.85, 128,060 and 50,355.38

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Solution

The fourth proportional to 92,796.85, 128,060 and 50,355.38 is: 69,490.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,796.85 : 128,060 = 50,355.38 : x
  2. Step 2: Convert to fraction form
    92,796.85/128,060 = 50,355.38/x
  3. Step 3: Cross multiply
    92,796.85x = 128,060 × 50,355.38
  4. Step 4: Simplify right side
    92,796.85x = 6,448,509,962.80
  5. Step 5: Solve for x
    x = 6,448,509,962.80/92,796.85
  6. Step 6: Final answer
    x = 69,490.61

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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.