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Finding the Fourth Proportional to 14,190.98, 21,286.47 and 4,831.08

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Solution

The fourth proportional to 14,190.98, 21,286.47 and 4,831.08 is: 7,246.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,190.98 : 21,286.47 = 4,831.08 : x
  2. Step 2: Convert to fraction form
    14,190.98/21,286.47 = 4,831.08/x
  3. Step 3: Cross multiply
    14,190.98x = 21,286.47 × 4,831.08
  4. Step 4: Simplify right side
    14,190.98x = 102,836,639.49
  5. Step 5: Solve for x
    x = 102,836,639.49/14,190.98
  6. Step 6: Final answer
    x = 7,246.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.