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Finding the Fourth Proportional to 18,643.86, 25,722.74 and 10,576.19

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Solution

The fourth proportional to 18,643.86, 25,722.74 and 10,576.19 is: 14,591.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,643.86 : 25,722.74 = 10,576.19 : x
  2. Step 2: Convert to fraction form
    18,643.86/25,722.74 = 10,576.19/x
  3. Step 3: Cross multiply
    18,643.86x = 25,722.74 × 10,576.19
  4. Step 4: Simplify right side
    18,643.86x = 272,048,404.07
  5. Step 5: Solve for x
    x = 272,048,404.07/18,643.86
  6. Step 6: Final answer
    x = 14,591.85

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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.