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Finding the Fourth Proportional to 186,564.80, 279,847.20 and 61,905.80

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Solution

The fourth proportional to 186,564.80, 279,847.20 and 61,905.80 is: 92,858.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,564.80 : 279,847.20 = 61,905.80 : x
  2. Step 2: Convert to fraction form
    186,564.80/279,847.20 = 61,905.80/x
  3. Step 3: Cross multiply
    186,564.80x = 279,847.20 × 61,905.80
  4. Step 4: Simplify right side
    186,564.80x = 17,324,164,793.76
  5. Step 5: Solve for x
    x = 17,324,164,793.76/186,564.80
  6. Step 6: Final answer
    x = 92,858.70

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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.