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Finding the Fourth Proportional to 13,763.64, 18,993.84 and 7,476.01

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Solution

The fourth proportional to 13,763.64, 18,993.84 and 7,476.01 is: 10,316.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,763.64 : 18,993.84 = 7,476.01 : x
  2. Step 2: Convert to fraction form
    13,763.64/18,993.84 = 7,476.01/x
  3. Step 3: Cross multiply
    13,763.64x = 18,993.84 × 7,476.01
  4. Step 4: Simplify right side
    13,763.64x = 141,998,133.49
  5. Step 5: Solve for x
    x = 141,998,133.49/13,763.64
  6. Step 6: Final answer
    x = 10,316.91

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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.