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Finding the Fourth Proportional to 14,745.49, 20,348.94 and 8,031.17

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Solution

The fourth proportional to 14,745.49, 20,348.94 and 8,031.17 is: 11,083.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,745.49 : 20,348.94 = 8,031.17 : x
  2. Step 2: Convert to fraction form
    14,745.49/20,348.94 = 8,031.17/x
  3. Step 3: Cross multiply
    14,745.49x = 20,348.94 × 8,031.17
  4. Step 4: Simplify right side
    14,745.49x = 163,425,803.09
  5. Step 5: Solve for x
    x = 163,425,803.09/14,745.49
  6. Step 6: Final answer
    x = 11,083.11

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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.