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Finding the Fourth Proportional to 7,191.17, 9,923.88 and 4,004.63

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Solution

The fourth proportional to 7,191.17, 9,923.88 and 4,004.63 is: 5,526.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191.17 : 9,923.88 = 4,004.63 : x
  2. Step 2: Convert to fraction form
    7,191.17/9,923.88 = 4,004.63/x
  3. Step 3: Cross multiply
    7,191.17x = 9,923.88 × 4,004.63
  4. Step 4: Simplify right side
    7,191.17x = 39,741,467.56
  5. Step 5: Solve for x
    x = 39,741,467.56/7,191.17
  6. Step 6: Final answer
    x = 5,526.43

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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.