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Finding the Fourth Proportional to 61,608.20, 85,018.02 and 36,465.80

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Solution

The fourth proportional to 61,608.20, 85,018.02 and 36,465.80 is: 50,322.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,608.20 : 85,018.02 = 36,465.80 : x
  2. Step 2: Convert to fraction form
    61,608.20/85,018.02 = 36,465.80/x
  3. Step 3: Cross multiply
    61,608.20x = 85,018.02 × 36,465.80
  4. Step 4: Simplify right side
    61,608.20x = 3,100,250,113.72
  5. Step 5: Solve for x
    x = 3,100,250,113.72/61,608.20
  6. Step 6: Final answer
    x = 50,322.04

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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.