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Finding the Fourth Proportional to 18,636.69, 25,718.64 and 10,253.19

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Solution

The fourth proportional to 18,636.69, 25,718.64 and 10,253.19 is: 14,149.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.69 : 25,718.64 = 10,253.19 : x
  2. Step 2: Convert to fraction form
    18,636.69/25,718.64 = 10,253.19/x
  3. Step 3: Cross multiply
    18,636.69x = 25,718.64 × 10,253.19
  4. Step 4: Simplify right side
    18,636.69x = 263,698,102.46
  5. Step 5: Solve for x
    x = 263,698,102.46/18,636.69
  6. Step 6: Final answer
    x = 14,149.41

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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.