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Finding the Fourth Proportional to 186,991.97, 280,487.86 and 46,750.60

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Solution

The fourth proportional to 186,991.97, 280,487.86 and 46,750.60 is: 70,125.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,991.97 : 280,487.86 = 46,750.60 : x
  2. Step 2: Convert to fraction form
    186,991.97/280,487.86 = 46,750.60/x
  3. Step 3: Cross multiply
    186,991.97x = 280,487.86 × 46,750.60
  4. Step 4: Simplify right side
    186,991.97x = 13,112,974,929.62
  5. Step 5: Solve for x
    x = 13,112,974,929.62/186,991.97
  6. Step 6: Final answer
    x = 70,125.87

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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.