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Finding the Fourth Proportional to 61,121.76, 91,859.76 and 40,476.48

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Solution

The fourth proportional to 61,121.76, 91,859.76 and 40,476.48 is: 60,832.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,121.76 : 91,859.76 = 40,476.48 : x
  2. Step 2: Convert to fraction form
    61,121.76/91,859.76 = 40,476.48/x
  3. Step 3: Cross multiply
    61,121.76x = 91,859.76 × 40,476.48
  4. Step 4: Simplify right side
    61,121.76x = 3,718,159,738.44
  5. Step 5: Solve for x
    x = 3,718,159,738.44/61,121.76
  6. Step 6: Final answer
    x = 60,832.01

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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.