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Finding the Fourth Proportional to 99,453.75, 137,246.19 and 54,741.75

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Solution

The fourth proportional to 99,453.75, 137,246.19 and 54,741.75 is: 75,543.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,453.75 : 137,246.19 = 54,741.75 : x
  2. Step 2: Convert to fraction form
    99,453.75/137,246.19 = 54,741.75/x
  3. Step 3: Cross multiply
    99,453.75x = 137,246.19 × 54,741.75
  4. Step 4: Simplify right side
    99,453.75x = 7,513,096,621.43
  5. Step 5: Solve for x
    x = 7,513,096,621.43/99,453.75
  6. Step 6: Final answer
    x = 75,543.62

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1.5x scale

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.