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Finding the Fourth Proportional to 92,571.93, 138,864.38 and 45,812.25

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Solution

The fourth proportional to 92,571.93, 138,864.38 and 45,812.25 is: 68,721.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,571.93 : 138,864.38 = 45,812.25 : x
  2. Step 2: Convert to fraction form
    92,571.93/138,864.38 = 45,812.25/x
  3. Step 3: Cross multiply
    92,571.93x = 138,864.38 × 45,812.25
  4. Step 4: Simplify right side
    92,571.93x = 6,361,689,463.59
  5. Step 5: Solve for x
    x = 6,361,689,463.59/92,571.93
  6. Step 6: Final answer
    x = 68,721.58

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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.