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Finding the Fourth Proportional to 18,607.69, 25,661.02 and 12,223.02

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Solution

The fourth proportional to 18,607.69, 25,661.02 and 12,223.02 is: 16,856.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.69 : 25,661.02 = 12,223.02 : x
  2. Step 2: Convert to fraction form
    18,607.69/25,661.02 = 12,223.02/x
  3. Step 3: Cross multiply
    18,607.69x = 25,661.02 × 12,223.02
  4. Step 4: Simplify right side
    18,607.69x = 313,655,160.68
  5. Step 5: Solve for x
    x = 313,655,160.68/18,607.69
  6. Step 6: Final answer
    x = 16,856.21

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Double scale
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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.