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Finding the Fourth Proportional to 14,616.65, 21,920.02 and 4,753.49

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Solution

The fourth proportional to 14,616.65, 21,920.02 and 4,753.49 is: 7,128.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,616.65 : 21,920.02 = 4,753.49 : x
  2. Step 2: Convert to fraction form
    14,616.65/21,920.02 = 4,753.49/x
  3. Step 3: Cross multiply
    14,616.65x = 21,920.02 × 4,753.49
  4. Step 4: Simplify right side
    14,616.65x = 104,196,474.39
  5. Step 5: Solve for x
    x = 104,196,474.39/14,616.65
  6. Step 6: Final answer
    x = 7,128.61

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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.