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Finding the Fourth Proportional to 18,764.62, 25,898.65 and 12,058.63

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Solution

The fourth proportional to 18,764.62, 25,898.65 and 12,058.63 is: 16,643.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,764.62 : 25,898.65 = 12,058.63 : x
  2. Step 2: Convert to fraction form
    18,764.62/25,898.65 = 12,058.63/x
  3. Step 3: Cross multiply
    18,764.62x = 25,898.65 × 12,058.63
  4. Step 4: Simplify right side
    18,764.62x = 312,302,142.96
  5. Step 5: Solve for x
    x = 312,302,142.96/18,764.62
  6. Step 6: Final answer
    x = 16,643.14

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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.