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Finding the Fourth Proportional to 186,808.19, 280,076.49 and 74,454.71

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Solution

The fourth proportional to 186,808.19, 280,076.49 and 74,454.71 is: 111,627.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,808.19 : 280,076.49 = 74,454.71 : x
  2. Step 2: Convert to fraction form
    186,808.19/280,076.49 = 74,454.71/x
  3. Step 3: Cross multiply
    186,808.19x = 280,076.49 × 74,454.71
  4. Step 4: Simplify right side
    186,808.19x = 20,853,012,440.39
  5. Step 5: Solve for x
    x = 20,853,012,440.39/186,808.19
  6. Step 6: Final answer
    x = 111,627.94

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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.