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Finding the Fourth Proportional to 186,866.80, 280,300.20 and 154,061.80

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Solution

The fourth proportional to 186,866.80, 280,300.20 and 154,061.80 is: 231,092.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,866.80 : 280,300.20 = 154,061.80 : x
  2. Step 2: Convert to fraction form
    186,866.80/280,300.20 = 154,061.80/x
  3. Step 3: Cross multiply
    186,866.80x = 280,300.20 × 154,061.80
  4. Step 4: Simplify right side
    186,866.80x = 43,183,553,352.36
  5. Step 5: Solve for x
    x = 43,183,553,352.36/186,866.80
  6. Step 6: Final answer
    x = 231,092.70

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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.