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Finding the Fourth Proportional to 61,899.64, 85,421.27 and 33,605.32

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Solution

The fourth proportional to 61,899.64, 85,421.27 and 33,605.32 is: 46,375.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,899.64 : 85,421.27 = 33,605.32 : x
  2. Step 2: Convert to fraction form
    61,899.64/85,421.27 = 33,605.32/x
  3. Step 3: Cross multiply
    61,899.64x = 85,421.27 × 33,605.32
  4. Step 4: Simplify right side
    61,899.64x = 2,870,608,945.13
  5. Step 5: Solve for x
    x = 2,870,608,945.13/61,899.64
  6. Step 6: Final answer
    x = 46,375.21

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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.