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Finding the Fourth Proportional to 18,163.84, 25,066.74 and 10,205.90

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Solution

The fourth proportional to 18,163.84, 25,066.74 and 10,205.90 is: 14,084.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,163.84 : 25,066.74 = 10,205.90 : x
  2. Step 2: Convert to fraction form
    18,163.84/25,066.74 = 10,205.90/x
  3. Step 3: Cross multiply
    18,163.84x = 25,066.74 × 10,205.90
  4. Step 4: Simplify right side
    18,163.84x = 255,828,641.77
  5. Step 5: Solve for x
    x = 255,828,641.77/18,163.84
  6. Step 6: Final answer
    x = 14,084.50

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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.