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Finding the Fourth Proportional to 30,958.79, 42,723.59 and 17,529.67

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Solution

The fourth proportional to 30,958.79, 42,723.59 and 17,529.67 is: 24,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,958.79 : 42,723.59 = 17,529.67 : x
  2. Step 2: Convert to fraction form
    30,958.79/42,723.59 = 17,529.67/x
  3. Step 3: Cross multiply
    30,958.79x = 42,723.59 × 17,529.67
  4. Step 4: Simplify right side
    30,958.79x = 748,930,132.65
  5. Step 5: Solve for x
    x = 748,930,132.65/30,958.79
  6. Step 6: Final answer
    x = 24,191.20

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.