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Finding the Fourth Proportional to 201,160.25, 277,531.34 and 128,605.61

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Solution

The fourth proportional to 201,160.25, 277,531.34 and 128,605.61 is: 177,431.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,160.25 : 277,531.34 = 128,605.61 : x
  2. Step 2: Convert to fraction form
    201,160.25/277,531.34 = 128,605.61/x
  3. Step 3: Cross multiply
    201,160.25x = 277,531.34 × 128,605.61
  4. Step 4: Simplify right side
    201,160.25x = 35,692,085,244.13
  5. Step 5: Solve for x
    x = 35,692,085,244.13/201,160.25
  6. Step 6: Final answer
    x = 177,431.11

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1.5x scale

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.