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Finding the Fourth Proportional to 92,792.48, 128,046.57 and 54,553.59

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Solution

The fourth proportional to 92,792.48, 128,046.57 and 54,553.59 is: 75,279.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,792.48 : 128,046.57 = 54,553.59 : x
  2. Step 2: Convert to fraction form
    92,792.48/128,046.57 = 54,553.59/x
  3. Step 3: Cross multiply
    92,792.48x = 128,046.57 × 54,553.59
  4. Step 4: Simplify right side
    92,792.48x = 6,985,400,080.69
  5. Step 5: Solve for x
    x = 6,985,400,080.69/92,792.48
  6. Step 6: Final answer
    x = 75,279.81

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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.