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Finding the Fourth Proportional to 17,771.65, 24,527.89 and 13,515.89

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Solution

The fourth proportional to 17,771.65, 24,527.89 and 13,515.89 is: 18,654.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,771.65 : 24,527.89 = 13,515.89 : x
  2. Step 2: Convert to fraction form
    17,771.65/24,527.89 = 13,515.89/x
  3. Step 3: Cross multiply
    17,771.65x = 24,527.89 × 13,515.89
  4. Step 4: Simplify right side
    17,771.65x = 331,516,188.40
  5. Step 5: Solve for x
    x = 331,516,188.40/17,771.65
  6. Step 6: Final answer
    x = 18,654.21

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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.