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Finding the Fourth Proportional to 21,361.61, 32,042.42 and 16,674.60

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Solution

The fourth proportional to 21,361.61, 32,042.42 and 16,674.60 is: 25,011.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,361.61 : 32,042.42 = 16,674.60 : x
  2. Step 2: Convert to fraction form
    21,361.61/32,042.42 = 16,674.60/x
  3. Step 3: Cross multiply
    21,361.61x = 32,042.42 × 16,674.60
  4. Step 4: Simplify right side
    21,361.61x = 534,294,536.53
  5. Step 5: Solve for x
    x = 534,294,536.53/21,361.61
  6. Step 6: Final answer
    x = 25,011.90

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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.