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Finding the Fourth Proportional to 65,183.68, 97,780.74 and 20,816.72

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Solution

The fourth proportional to 65,183.68, 97,780.74 and 20,816.72 is: 31,226.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,183.68 : 97,780.74 = 20,816.72 : x
  2. Step 2: Convert to fraction form
    65,183.68/97,780.74 = 20,816.72/x
  3. Step 3: Cross multiply
    65,183.68x = 97,780.74 × 20,816.72
  4. Step 4: Simplify right side
    65,183.68x = 2,035,474,285.97
  5. Step 5: Solve for x
    x = 2,035,474,285.97/65,183.68
  6. Step 6: Final answer
    x = 31,226.75

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1.5x scale

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.