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Finding the Fourth Proportional to 61,608.15, 85,020.48 and 34,745.40

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Solution

The fourth proportional to 61,608.15, 85,020.48 and 34,745.40 is: 47,949.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,608.15 : 85,020.48 = 34,745.40 : x
  2. Step 2: Convert to fraction form
    61,608.15/85,020.48 = 34,745.40/x
  3. Step 3: Cross multiply
    61,608.15x = 85,020.48 × 34,745.40
  4. Step 4: Simplify right side
    61,608.15x = 2,954,070,585.79
  5. Step 5: Solve for x
    x = 2,954,070,585.79/61,608.15
  6. Step 6: Final answer
    x = 47,949.35

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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.