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Finding the Fourth Proportional to 61,480.12, 84,753.22 and 52,945.32

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Solution

The fourth proportional to 61,480.12, 84,753.22 and 52,945.32 is: 72,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,480.12 : 84,753.22 = 52,945.32 : x
  2. Step 2: Convert to fraction form
    61,480.12/84,753.22 = 52,945.32/x
  3. Step 3: Cross multiply
    61,480.12x = 84,753.22 × 52,945.32
  4. Step 4: Simplify right side
    61,480.12x = 4,487,286,353.93
  5. Step 5: Solve for x
    x = 4,487,286,353.93/61,480.12
  6. Step 6: Final answer
    x = 72,987.60

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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.