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Finding the Fourth Proportional to 61,961.47, 85,486.63 and 36,114.12

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Solution

The fourth proportional to 61,961.47, 85,486.63 and 36,114.12 is: 49,825.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,961.47 : 85,486.63 = 36,114.12 : x
  2. Step 2: Convert to fraction form
    61,961.47/85,486.63 = 36,114.12/x
  3. Step 3: Cross multiply
    61,961.47x = 85,486.63 × 36,114.12
  4. Step 4: Simplify right side
    61,961.47x = 3,087,274,414.22
  5. Step 5: Solve for x
    x = 3,087,274,414.22/61,961.47
  6. Step 6: Final answer
    x = 49,825.71

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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.