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Finding the Fourth Proportional to 54,861.80, 74,121.75 and 54,861.80

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Solution

The fourth proportional to 54,861.80, 74,121.75 and 54,861.80 is: 74,121.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,861.80 : 74,121.75 = 54,861.80 : x
  2. Step 2: Convert to fraction form
    54,861.80/74,121.75 = 54,861.80/x
  3. Step 3: Cross multiply
    54,861.80x = 74,121.75 × 54,861.80
  4. Step 4: Simplify right side
    54,861.80x = 4,066,452,624.15
  5. Step 5: Solve for x
    x = 4,066,452,624.15/54,861.80
  6. Step 6: Final answer
    x = 74,121.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.