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Finding the Fourth Proportional to 201,336.67, 277,616.33 and 128,643.52

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Solution

The fourth proportional to 201,336.67, 277,616.33 and 128,643.52 is: 177,382.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,336.67 : 277,616.33 = 128,643.52 : x
  2. Step 2: Convert to fraction form
    201,336.67/277,616.33 = 128,643.52/x
  3. Step 3: Cross multiply
    201,336.67x = 277,616.33 × 128,643.52
  4. Step 4: Simplify right side
    201,336.67x = 35,713,541,257.46
  5. Step 5: Solve for x
    x = 35,713,541,257.46/201,336.67
  6. Step 6: Final answer
    x = 177,382.20

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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.