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Finding the Fourth Proportional to 61,881.51, 85,396.50 and 33,587.21

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Solution

The fourth proportional to 61,881.51, 85,396.50 and 33,587.21 is: 46,350.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,881.51 : 85,396.50 = 33,587.21 : x
  2. Step 2: Convert to fraction form
    61,881.51/85,396.50 = 33,587.21/x
  3. Step 3: Cross multiply
    61,881.51x = 85,396.50 × 33,587.21
  4. Step 4: Simplify right side
    61,881.51x = 2,868,229,751.78
  5. Step 5: Solve for x
    x = 2,868,229,751.78/61,881.51
  6. Step 6: Final answer
    x = 46,350.35

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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.