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Finding the Fourth Proportional to 14,564.70, 21,803.85 and 9,639.90

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Solution

The fourth proportional to 14,564.70, 21,803.85 and 9,639.90 is: 14,431.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,564.70 : 21,803.85 = 9,639.90 : x
  2. Step 2: Convert to fraction form
    14,564.70/21,803.85 = 9,639.90/x
  3. Step 3: Cross multiply
    14,564.70x = 21,803.85 × 9,639.90
  4. Step 4: Simplify right side
    14,564.70x = 210,186,933.62
  5. Step 5: Solve for x
    x = 210,186,933.62/14,564.70
  6. Step 6: Final answer
    x = 14,431.26

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