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Finding the Fourth Proportional to 119,831.75, 165,427.73 and 74,524.32

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Solution

The fourth proportional to 119,831.75, 165,427.73 and 74,524.32 is: 102,880.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,831.75 : 165,427.73 = 74,524.32 : x
  2. Step 2: Convert to fraction form
    119,831.75/165,427.73 = 74,524.32/x
  3. Step 3: Cross multiply
    119,831.75x = 165,427.73 × 74,524.32
  4. Step 4: Simplify right side
    119,831.75x = 12,328,389,894.06
  5. Step 5: Solve for x
    x = 12,328,389,894.06/119,831.75
  6. Step 6: Final answer
    x = 102,880.83

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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.