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Finding the Fourth Proportional to 64,290.62, 96,389.22 and 26,861.40

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Solution

The fourth proportional to 64,290.62, 96,389.22 and 26,861.40 is: 40,272.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,290.62 : 96,389.22 = 26,861.40 : x
  2. Step 2: Convert to fraction form
    64,290.62/96,389.22 = 26,861.40/x
  3. Step 3: Cross multiply
    64,290.62x = 96,389.22 × 26,861.40
  4. Step 4: Simplify right side
    64,290.62x = 2,589,148,845.01
  5. Step 5: Solve for x
    x = 2,589,148,845.01/64,290.62
  6. Step 6: Final answer
    x = 40,272.58

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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.