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Finding the Fourth Proportional to 14,358.38, 19,811.66 and 8,388.90

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Solution

The fourth proportional to 14,358.38, 19,811.66 and 8,388.90 is: 11,574.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,358.38 : 19,811.66 = 8,388.90 : x
  2. Step 2: Convert to fraction form
    14,358.38/19,811.66 = 8,388.90/x
  3. Step 3: Cross multiply
    14,358.38x = 19,811.66 × 8,388.90
  4. Step 4: Simplify right side
    14,358.38x = 166,198,006.02
  5. Step 5: Solve for x
    x = 166,198,006.02/14,358.38
  6. Step 6: Final answer
    x = 11,574.98

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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.