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Finding the Fourth Proportional to 71,495.72, 107,252.52 and 21,575.74

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Solution

The fourth proportional to 71,495.72, 107,252.52 and 21,575.74 is: 32,366.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,495.72 : 107,252.52 = 21,575.74 : x
  2. Step 2: Convert to fraction form
    71,495.72/107,252.52 = 21,575.74/x
  3. Step 3: Cross multiply
    71,495.72x = 107,252.52 × 21,575.74
  4. Step 4: Simplify right side
    71,495.72x = 2,314,051,949.60
  5. Step 5: Solve for x
    x = 2,314,051,949.60/71,495.72
  6. Step 6: Final answer
    x = 32,366.30

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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.