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Finding the Fourth Proportional to 186,783.84, 280,211.75 and 60,455.43

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Solution

The fourth proportional to 186,783.84, 280,211.75 and 60,455.43 is: 90,694.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,783.84 : 280,211.75 = 60,455.43 : x
  2. Step 2: Convert to fraction form
    186,783.84/280,211.75 = 60,455.43/x
  3. Step 3: Cross multiply
    186,783.84x = 280,211.75 × 60,455.43
  4. Step 4: Simplify right side
    186,783.84x = 16,940,322,101.80
  5. Step 5: Solve for x
    x = 16,940,322,101.80/186,783.84
  6. Step 6: Final answer
    x = 90,694.80

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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.