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Finding the Fourth Proportional to 11,532.79, 15,881.73 and 10,019.65

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Solution

The fourth proportional to 11,532.79, 15,881.73 and 10,019.65 is: 13,797.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,532.79 : 15,881.73 = 10,019.65 : x
  2. Step 2: Convert to fraction form
    11,532.79/15,881.73 = 10,019.65/x
  3. Step 3: Cross multiply
    11,532.79x = 15,881.73 × 10,019.65
  4. Step 4: Simplify right side
    11,532.79x = 159,129,375.99
  5. Step 5: Solve for x
    x = 159,129,375.99/11,532.79
  6. Step 6: Final answer
    x = 13,797.99

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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.