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Finding the Fourth Proportional to 61,899.82, 85,421.75 and 33,605.51

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Solution

The fourth proportional to 61,899.82, 85,421.75 and 33,605.51 is: 46,375.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,899.82 : 85,421.75 = 33,605.51 : x
  2. Step 2: Convert to fraction form
    61,899.82/85,421.75 = 33,605.51/x
  3. Step 3: Cross multiply
    61,899.82x = 85,421.75 × 33,605.51
  4. Step 4: Simplify right side
    61,899.82x = 2,870,641,355.24
  5. Step 5: Solve for x
    x = 2,870,641,355.24/61,899.82
  6. Step 6: Final answer
    x = 46,375.60

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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.