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Finding the Fourth Proportional to 14,353.21, 19,809.71 and 8,388.37

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Solution

The fourth proportional to 14,353.21, 19,809.71 and 8,388.37 is: 11,577.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,353.21 : 19,809.71 = 8,388.37 : x
  2. Step 2: Convert to fraction form
    14,353.21/19,809.71 = 8,388.37/x
  3. Step 3: Cross multiply
    14,353.21x = 19,809.71 × 8,388.37
  4. Step 4: Simplify right side
    14,353.21x = 166,171,177.07
  5. Step 5: Solve for x
    x = 166,171,177.07/14,353.21
  6. Step 6: Final answer
    x = 11,577.28

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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.