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Finding the Fourth Proportional to 47,722.59, 65,863.22 and 28,859.67

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Solution

The fourth proportional to 47,722.59, 65,863.22 and 28,859.67 is: 39,830.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,722.59 : 65,863.22 = 28,859.67 : x
  2. Step 2: Convert to fraction form
    47,722.59/65,863.22 = 28,859.67/x
  3. Step 3: Cross multiply
    47,722.59x = 65,863.22 × 28,859.67
  4. Step 4: Simplify right side
    47,722.59x = 1,900,790,650.04
  5. Step 5: Solve for x
    x = 1,900,790,650.04/47,722.59
  6. Step 6: Final answer
    x = 39,830.00

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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.