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Finding the Fourth Proportional to 22,903.93, 31,605.42 and 12,831.04

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Solution

The fourth proportional to 22,903.93, 31,605.42 and 12,831.04 is: 17,705.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,903.93 : 31,605.42 = 12,831.04 : x
  2. Step 2: Convert to fraction form
    22,903.93/31,605.42 = 12,831.04/x
  3. Step 3: Cross multiply
    22,903.93x = 31,605.42 × 12,831.04
  4. Step 4: Simplify right side
    22,903.93x = 405,530,408.24
  5. Step 5: Solve for x
    x = 405,530,408.24/22,903.93
  6. Step 6: Final answer
    x = 17,705.71

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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.