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Finding the Fourth Proportional to 79,220.94, 118,831.29 and 26,667.33

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Solution

The fourth proportional to 79,220.94, 118,831.29 and 26,667.33 is: 40,000.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,220.94 : 118,831.29 = 26,667.33 : x
  2. Step 2: Convert to fraction form
    79,220.94/118,831.29 = 26,667.33/x
  3. Step 3: Cross multiply
    79,220.94x = 118,831.29 × 26,667.33
  4. Step 4: Simplify right side
    79,220.94x = 3,168,912,679.14
  5. Step 5: Solve for x
    x = 3,168,912,679.14/79,220.94
  6. Step 6: Final answer
    x = 40,000.95

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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.