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Finding the Fourth Proportional to 61,670, 85,104.60 and 33,375.90

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Solution

The fourth proportional to 61,670, 85,104.60 and 33,375.90 is: 46,058.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,670 : 85,104.60 = 33,375.90 : x
  2. Step 2: Convert to fraction form
    61,670/85,104.60 = 33,375.90/x
  3. Step 3: Cross multiply
    61,670x = 85,104.60 × 33,375.90
  4. Step 4: Simplify right side
    61,670x = 2,840,442,619.14
  5. Step 5: Solve for x
    x = 2,840,442,619.14/61,670
  6. Step 6: Final answer
    x = 46,058.74

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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.