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Finding the Fourth Proportional to 9,963.66, 14,941.21 and 3,386.87

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Solution

The fourth proportional to 9,963.66, 14,941.21 and 3,386.87 is: 5,078.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,963.66 : 14,941.21 = 3,386.87 : x
  2. Step 2: Convert to fraction form
    9,963.66/14,941.21 = 3,386.87/x
  3. Step 3: Cross multiply
    9,963.66x = 14,941.21 × 3,386.87
  4. Step 4: Simplify right side
    9,963.66x = 50,603,935.91
  5. Step 5: Solve for x
    x = 50,603,935.91/9,963.66
  6. Step 6: Final answer
    x = 5,078.85

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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.