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Finding the Fourth Proportional to 21,365.64, 32,020.58 and 15,462.41

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Solution

The fourth proportional to 21,365.64, 32,020.58 and 15,462.41 is: 23,173.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,365.64 : 32,020.58 = 15,462.41 : x
  2. Step 2: Convert to fraction form
    21,365.64/32,020.58 = 15,462.41/x
  3. Step 3: Cross multiply
    21,365.64x = 32,020.58 × 15,462.41
  4. Step 4: Simplify right side
    21,365.64x = 495,115,098.98
  5. Step 5: Solve for x
    x = 495,115,098.98/21,365.64
  6. Step 6: Final answer
    x = 23,173.43

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1.5x scale

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.