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Finding the Fourth Proportional to 617,644.09, 926,540.89 and 218,203.12

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Solution

The fourth proportional to 617,644.09, 926,540.89 and 218,203.12 is: 327,331.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,644.09 : 926,540.89 = 218,203.12 : x
  2. Step 2: Convert to fraction form
    617,644.09/926,540.89 = 218,203.12/x
  3. Step 3: Cross multiply
    617,644.09x = 926,540.89 × 218,203.12
  4. Step 4: Simplify right side
    617,644.09x = 202,174,113,005.58
  5. Step 5: Solve for x
    x = 202,174,113,005.58/617,644.09
  6. Step 6: Final answer
    x = 327,331.09

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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.