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Finding the Fourth Proportional to 128,083.96, 192,121.84 and 57,963.27

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Solution

The fourth proportional to 128,083.96, 192,121.84 and 57,963.27 is: 86,943.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,083.96 : 192,121.84 = 57,963.27 : x
  2. Step 2: Convert to fraction form
    128,083.96/192,121.84 = 57,963.27/x
  3. Step 3: Cross multiply
    128,083.96x = 192,121.84 × 57,963.27
  4. Step 4: Simplify right side
    128,083.96x = 11,136,010,084.82
  5. Step 5: Solve for x
    x = 11,136,010,084.82/128,083.96
  6. Step 6: Final answer
    x = 86,943.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.