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Finding the Fourth Proportional to 53,956.90, 80,958.70 and 28,967.80

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Solution

The fourth proportional to 53,956.90, 80,958.70 and 28,967.80 is: 43,464.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,956.90 : 80,958.70 = 28,967.80 : x
  2. Step 2: Convert to fraction form
    53,956.90/80,958.70 = 28,967.80/x
  3. Step 3: Cross multiply
    53,956.90x = 80,958.70 × 28,967.80
  4. Step 4: Simplify right side
    53,956.90x = 2,345,195,429.86
  5. Step 5: Solve for x
    x = 2,345,195,429.86/53,956.90
  6. Step 6: Final answer
    x = 43,464.24

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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.