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Finding the Fourth Proportional to 73,210.20, 109,944.90 and 56,610.60

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Solution

The fourth proportional to 73,210.20, 109,944.90 and 56,610.60 is: 85,016.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,210.20 : 109,944.90 = 56,610.60 : x
  2. Step 2: Convert to fraction form
    73,210.20/109,944.90 = 56,610.60/x
  3. Step 3: Cross multiply
    73,210.20x = 109,944.90 × 56,610.60
  4. Step 4: Simplify right side
    73,210.20x = 6,224,046,755.94
  5. Step 5: Solve for x
    x = 6,224,046,755.94/73,210.20
  6. Step 6: Final answer
    x = 85,016.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.