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Finding the Fourth Proportional to 14,113.66, 19,472.90 and 11,120.20

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Solution

The fourth proportional to 14,113.66, 19,472.90 and 11,120.20 is: 15,342.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,113.66 : 19,472.90 = 11,120.20 : x
  2. Step 2: Convert to fraction form
    14,113.66/19,472.90 = 11,120.20/x
  3. Step 3: Cross multiply
    14,113.66x = 19,472.90 × 11,120.20
  4. Step 4: Simplify right side
    14,113.66x = 216,542,542.58
  5. Step 5: Solve for x
    x = 216,542,542.58/14,113.66
  6. Step 6: Final answer
    x = 15,342.76

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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.