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Finding the Fourth Proportional to 14,472.72, 21,708.86 and 4,611.87

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Solution

The fourth proportional to 14,472.72, 21,708.86 and 4,611.87 is: 6,917.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,472.72 : 21,708.86 = 4,611.87 : x
  2. Step 2: Convert to fraction form
    14,472.72/21,708.86 = 4,611.87/x
  3. Step 3: Cross multiply
    14,472.72x = 21,708.86 × 4,611.87
  4. Step 4: Simplify right side
    14,472.72x = 100,118,417.11
  5. Step 5: Solve for x
    x = 100,118,417.11/14,472.72
  6. Step 6: Final answer
    x = 6,917.73

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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.