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Finding the Fourth Proportional to 13,963.65, 20,948.91 and 6,946.98

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Solution

The fourth proportional to 13,963.65, 20,948.91 and 6,946.98 is: 10,422.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,963.65 : 20,948.91 = 6,946.98 : x
  2. Step 2: Convert to fraction form
    13,963.65/20,948.91 = 6,946.98/x
  3. Step 3: Cross multiply
    13,963.65x = 20,948.91 × 6,946.98
  4. Step 4: Simplify right side
    13,963.65x = 145,531,658.79
  5. Step 5: Solve for x
    x = 145,531,658.79/13,963.65
  6. Step 6: Final answer
    x = 10,422.18

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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.