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Finding the Fourth Proportional to 52,794.76, 72,856.78 and 28,921.88

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Solution

The fourth proportional to 52,794.76, 72,856.78 and 28,921.88 is: 39,912.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,794.76 : 72,856.78 = 28,921.88 : x
  2. Step 2: Convert to fraction form
    52,794.76/72,856.78 = 28,921.88/x
  3. Step 3: Cross multiply
    52,794.76x = 72,856.78 × 28,921.88
  4. Step 4: Simplify right side
    52,794.76x = 2,107,155,048.35
  5. Step 5: Solve for x
    x = 2,107,155,048.35/52,794.76
  6. Step 6: Final answer
    x = 39,912.20

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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.