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Finding the Fourth Proportional to 277,772.72, 416,710.92 and 90,915.44

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Solution

The fourth proportional to 277,772.72, 416,710.92 and 90,915.44 is: 136,390.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,772.72 : 416,710.92 = 90,915.44 : x
  2. Step 2: Convert to fraction form
    277,772.72/416,710.92 = 90,915.44/x
  3. Step 3: Cross multiply
    277,772.72x = 416,710.92 × 90,915.44
  4. Step 4: Simplify right side
    277,772.72x = 37,885,456,644.60
  5. Step 5: Solve for x
    x = 37,885,456,644.60/277,772.72
  6. Step 6: Final answer
    x = 136,390.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.