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Finding the Fourth Proportional to 13,914.29, 19,201.79 and 7,626.71

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Solution

The fourth proportional to 13,914.29, 19,201.79 and 7,626.71 is: 10,524.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,914.29 : 19,201.79 = 7,626.71 : x
  2. Step 2: Convert to fraction form
    13,914.29/19,201.79 = 7,626.71/x
  3. Step 3: Cross multiply
    13,914.29x = 19,201.79 × 7,626.71
  4. Step 4: Simplify right side
    13,914.29x = 146,446,483.81
  5. Step 5: Solve for x
    x = 146,446,483.81/13,914.29
  6. Step 6: Final answer
    x = 10,524.90

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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.