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Finding the Fourth Proportional to 14,420.63, 19,900.46 and 7,796.63

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Solution

The fourth proportional to 14,420.63, 19,900.46 and 7,796.63 is: 10,759.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,420.63 : 19,900.46 = 7,796.63 : x
  2. Step 2: Convert to fraction form
    14,420.63/19,900.46 = 7,796.63/x
  3. Step 3: Cross multiply
    14,420.63x = 19,900.46 × 7,796.63
  4. Step 4: Simplify right side
    14,420.63x = 155,156,443.44
  5. Step 5: Solve for x
    x = 155,156,443.44/14,420.63
  6. Step 6: Final answer
    x = 10,759.34

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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.