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Finding the Fourth Proportional to 19,801.78, 29,671.41 and 7,304.60

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Solution

The fourth proportional to 19,801.78, 29,671.41 and 7,304.60 is: 10,945.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,801.78 : 29,671.41 = 7,304.60 : x
  2. Step 2: Convert to fraction form
    19,801.78/29,671.41 = 7,304.60/x
  3. Step 3: Cross multiply
    19,801.78x = 29,671.41 × 7,304.60
  4. Step 4: Simplify right side
    19,801.78x = 216,737,781.49
  5. Step 5: Solve for x
    x = 216,737,781.49/19,801.78
  6. Step 6: Final answer
    x = 10,945.37

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1.5x scale

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.