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Finding the Fourth Proportional to 14,191.21, 19,584.77 and 7,903.57

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Solution

The fourth proportional to 14,191.21, 19,584.77 and 7,903.57 is: 10,907.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,191.21 : 19,584.77 = 7,903.57 : x
  2. Step 2: Convert to fraction form
    14,191.21/19,584.77 = 7,903.57/x
  3. Step 3: Cross multiply
    14,191.21x = 19,584.77 × 7,903.57
  4. Step 4: Simplify right side
    14,191.21x = 154,789,561.11
  5. Step 5: Solve for x
    x = 154,789,561.11/14,191.21
  6. Step 6: Final answer
    x = 10,907.43

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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.