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Finding the Fourth Proportional to 65,516.80, 90,404.05 and 36,832.54

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Solution

The fourth proportional to 65,516.80, 90,404.05 and 36,832.54 is: 50,823.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,516.80 : 90,404.05 = 36,832.54 : x
  2. Step 2: Convert to fraction form
    65,516.80/90,404.05 = 36,832.54/x
  3. Step 3: Cross multiply
    65,516.80x = 90,404.05 × 36,832.54
  4. Step 4: Simplify right side
    65,516.80x = 3,329,810,787.79
  5. Step 5: Solve for x
    x = 3,329,810,787.79/65,516.80
  6. Step 6: Final answer
    x = 50,823.77

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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.