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Finding the Fourth Proportional to 73,507.84, 110,245.20 and 20,916.16

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Solution

The fourth proportional to 73,507.84, 110,245.20 and 20,916.16 is: 31,369.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,507.84 : 110,245.20 = 20,916.16 : x
  2. Step 2: Convert to fraction form
    73,507.84/110,245.20 = 20,916.16/x
  3. Step 3: Cross multiply
    73,507.84x = 110,245.20 × 20,916.16
  4. Step 4: Simplify right side
    73,507.84x = 2,305,906,242.43
  5. Step 5: Solve for x
    x = 2,305,906,242.43/73,507.84
  6. Step 6: Final answer
    x = 31,369.53

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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.