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Finding the Fourth Proportional to 23,681.70, 32,720.78 and 18,325.98

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Solution

The fourth proportional to 23,681.70, 32,720.78 and 18,325.98 is: 25,320.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,681.70 : 32,720.78 = 18,325.98 : x
  2. Step 2: Convert to fraction form
    23,681.70/32,720.78 = 18,325.98/x
  3. Step 3: Cross multiply
    23,681.70x = 32,720.78 × 18,325.98
  4. Step 4: Simplify right side
    23,681.70x = 599,640,405.68
  5. Step 5: Solve for x
    x = 599,640,405.68/23,681.70
  6. Step 6: Final answer
    x = 25,320.83

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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.