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Finding the Fourth Proportional to 7,191.62, 9,924.21 and 4,004.92

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Solution

The fourth proportional to 7,191.62, 9,924.21 and 4,004.92 is: 5,526.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191.62 : 9,924.21 = 4,004.92 : x
  2. Step 2: Convert to fraction form
    7,191.62/9,924.21 = 4,004.92/x
  3. Step 3: Cross multiply
    7,191.62x = 9,924.21 × 4,004.92
  4. Step 4: Simplify right side
    7,191.62x = 39,745,667.11
  5. Step 5: Solve for x
    x = 39,745,667.11/7,191.62
  6. Step 6: Final answer
    x = 5,526.66

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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.