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Finding the Fourth Proportional to 18,472.64, 27,705.48 and 4,964

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Solution

The fourth proportional to 18,472.64, 27,705.48 and 4,964 is: 7,445.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,472.64 : 27,705.48 = 4,964 : x
  2. Step 2: Convert to fraction form
    18,472.64/27,705.48 = 4,964/x
  3. Step 3: Cross multiply
    18,472.64x = 27,705.48 × 4,964
  4. Step 4: Simplify right side
    18,472.64x = 137,530,002.72
  5. Step 5: Solve for x
    x = 137,530,002.72/18,472.64
  6. Step 6: Final answer
    x = 7,445.06

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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.