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Finding the Fourth Proportional to 14,636.25, 21,939.80 and 8,065.53

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Solution

The fourth proportional to 14,636.25, 21,939.80 and 8,065.53 is: 12,090.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,636.25 : 21,939.80 = 8,065.53 : x
  2. Step 2: Convert to fraction form
    14,636.25/21,939.80 = 8,065.53/x
  3. Step 3: Cross multiply
    14,636.25x = 21,939.80 × 8,065.53
  4. Step 4: Simplify right side
    14,636.25x = 176,956,074.77
  5. Step 5: Solve for x
    x = 176,956,074.77/14,636.25
  6. Step 6: Final answer
    x = 12,090.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.