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Finding the Fourth Proportional to 110,113.62, 151,969.40 and 61,728.61

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Solution

The fourth proportional to 110,113.62, 151,969.40 and 61,728.61 is: 85,192.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,113.62 : 151,969.40 = 61,728.61 : x
  2. Step 2: Convert to fraction form
    110,113.62/151,969.40 = 61,728.61/x
  3. Step 3: Cross multiply
    110,113.62x = 151,969.40 × 61,728.61
  4. Step 4: Simplify right side
    110,113.62x = 9,380,859,824.53
  5. Step 5: Solve for x
    x = 9,380,859,824.53/110,113.62
  6. Step 6: Final answer
    x = 85,192.55

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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.