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Finding the Fourth Proportional to 14,691.87, 20,267.26 and 9,381.10

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Solution

The fourth proportional to 14,691.87, 20,267.26 and 9,381.10 is: 12,941.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,691.87 : 20,267.26 = 9,381.10 : x
  2. Step 2: Convert to fraction form
    14,691.87/20,267.26 = 9,381.10/x
  3. Step 3: Cross multiply
    14,691.87x = 20,267.26 × 9,381.10
  4. Step 4: Simplify right side
    14,691.87x = 190,129,192.79
  5. Step 5: Solve for x
    x = 190,129,192.79/14,691.87
  6. Step 6: Final answer
    x = 12,941.12

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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.