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Finding the Fourth Proportional to 16,894.60, 25,341.92 and 5,207.72

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Solution

The fourth proportional to 16,894.60, 25,341.92 and 5,207.72 is: 7,811.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,894.60 : 25,341.92 = 5,207.72 : x
  2. Step 2: Convert to fraction form
    16,894.60/25,341.92 = 5,207.72/x
  3. Step 3: Cross multiply
    16,894.60x = 25,341.92 × 5,207.72
  4. Step 4: Simplify right side
    16,894.60x = 131,973,623.62
  5. Step 5: Solve for x
    x = 131,973,623.62/16,894.60
  6. Step 6: Final answer
    x = 7,811.59

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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.