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Finding the Fourth Proportional to 201,337.67, 277,617.70 and 128,644.52

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Solution

The fourth proportional to 201,337.67, 277,617.70 and 128,644.52 is: 177,383.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,337.67 : 277,617.70 = 128,644.52 : x
  2. Step 2: Convert to fraction form
    201,337.67/277,617.70 = 128,644.52/x
  3. Step 3: Cross multiply
    201,337.67x = 277,617.70 × 128,644.52
  4. Step 4: Simplify right side
    201,337.67x = 35,713,995,760.00
  5. Step 5: Solve for x
    x = 35,713,995,760.00/201,337.67
  6. Step 6: Final answer
    x = 177,383.58

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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.