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Finding the Fourth Proportional to 14,745.63, 20,349.20 and 8,031.24

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Solution

The fourth proportional to 14,745.63, 20,349.20 and 8,031.24 is: 11,083.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,745.63 : 20,349.20 = 8,031.24 : x
  2. Step 2: Convert to fraction form
    14,745.63/20,349.20 = 8,031.24/x
  3. Step 3: Cross multiply
    14,745.63x = 20,349.20 × 8,031.24
  4. Step 4: Simplify right side
    14,745.63x = 163,429,268.85
  5. Step 5: Solve for x
    x = 163,429,268.85/14,745.63
  6. Step 6: Final answer
    x = 11,083.23

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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.