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Finding the Fourth Proportional to 18,455.67, 25,468.74 and 10,072.17

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Solution

The fourth proportional to 18,455.67, 25,468.74 and 10,072.17 is: 13,899.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,455.67 : 25,468.74 = 10,072.17 : x
  2. Step 2: Convert to fraction form
    18,455.67/25,468.74 = 10,072.17/x
  3. Step 3: Cross multiply
    18,455.67x = 25,468.74 × 10,072.17
  4. Step 4: Simplify right side
    18,455.67x = 256,525,478.97
  5. Step 5: Solve for x
    x = 256,525,478.97/18,455.67
  6. Step 6: Final answer
    x = 13,899.55

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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.