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Finding the Fourth Proportional to 14,796.84, 20,420.26 and 8,509.22

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Solution

The fourth proportional to 14,796.84, 20,420.26 and 8,509.22 is: 11,743.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,796.84 : 20,420.26 = 8,509.22 : x
  2. Step 2: Convert to fraction form
    14,796.84/20,420.26 = 8,509.22/x
  3. Step 3: Cross multiply
    14,796.84x = 20,420.26 × 8,509.22
  4. Step 4: Simplify right side
    14,796.84x = 173,760,438.00
  5. Step 5: Solve for x
    x = 173,760,438.00/14,796.84
  6. Step 6: Final answer
    x = 11,743.07

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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.