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Finding the Fourth Proportional to 160,736.93, 221,772.16 and 126,639.78

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Solution

The fourth proportional to 160,736.93, 221,772.16 and 126,639.78 is: 174,727.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,736.93 : 221,772.16 = 126,639.78 : x
  2. Step 2: Convert to fraction form
    160,736.93/221,772.16 = 126,639.78/x
  3. Step 3: Cross multiply
    160,736.93x = 221,772.16 × 126,639.78
  4. Step 4: Simplify right side
    160,736.93x = 28,085,177,552.52
  5. Step 5: Solve for x
    x = 28,085,177,552.52/160,736.93
  6. Step 6: Final answer
    x = 174,727.60

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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.