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Finding the Fourth Proportional to 61,801.78, 85,327.41 and 36,659.38

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Solution

The fourth proportional to 61,801.78, 85,327.41 and 36,659.38 is: 50,614.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,801.78 : 85,327.41 = 36,659.38 : x
  2. Step 2: Convert to fraction form
    61,801.78/85,327.41 = 36,659.38/x
  3. Step 3: Cross multiply
    61,801.78x = 85,327.41 × 36,659.38
  4. Step 4: Simplify right side
    61,801.78x = 3,128,049,947.61
  5. Step 5: Solve for x
    x = 3,128,049,947.61/61,801.78
  6. Step 6: Final answer
    x = 50,614.24

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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.