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Finding the Fourth Proportional to 65,404.88, 90,286.14 and 44,212.86

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Solution

The fourth proportional to 65,404.88, 90,286.14 and 44,212.86 is: 61,032.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,404.88 : 90,286.14 = 44,212.86 : x
  2. Step 2: Convert to fraction form
    65,404.88/90,286.14 = 44,212.86/x
  3. Step 3: Cross multiply
    65,404.88x = 90,286.14 × 44,212.86
  4. Step 4: Simplify right side
    65,404.88x = 3,991,808,467.76
  5. Step 5: Solve for x
    x = 3,991,808,467.76/65,404.88
  6. Step 6: Final answer
    x = 61,032.27

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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.