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Finding the Fourth Proportional to 14,803.90, 20,429.44 and 8,089.51

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Solution

The fourth proportional to 14,803.90, 20,429.44 and 8,089.51 is: 11,163.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,803.90 : 20,429.44 = 8,089.51 : x
  2. Step 2: Convert to fraction form
    14,803.90/20,429.44 = 8,089.51/x
  3. Step 3: Cross multiply
    14,803.90x = 20,429.44 × 8,089.51
  4. Step 4: Simplify right side
    14,803.90x = 165,264,133.00
  5. Step 5: Solve for x
    x = 165,264,133.00/14,803.90
  6. Step 6: Final answer
    x = 11,163.56

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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.