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Finding the Fourth Proportional to 14,930.63, 20,603.90 and 8,216.17

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Solution

The fourth proportional to 14,930.63, 20,603.90 and 8,216.17 is: 11,338.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,930.63 : 20,603.90 = 8,216.17 : x
  2. Step 2: Convert to fraction form
    14,930.63/20,603.90 = 8,216.17/x
  3. Step 3: Cross multiply
    14,930.63x = 20,603.90 × 8,216.17
  4. Step 4: Simplify right side
    14,930.63x = 169,285,114.09
  5. Step 5: Solve for x
    x = 169,285,114.09/14,930.63
  6. Step 6: Final answer
    x = 11,338.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.