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Finding the Fourth Proportional to 186,805.80, 280,208.70 and 164,644.20

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Solution

The fourth proportional to 186,805.80, 280,208.70 and 164,644.20 is: 246,966.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,805.80 : 280,208.70 = 164,644.20 : x
  2. Step 2: Convert to fraction form
    186,805.80/280,208.70 = 164,644.20/x
  3. Step 3: Cross multiply
    186,805.80x = 280,208.70 × 164,644.20
  4. Step 4: Simplify right side
    186,805.80x = 46,134,737,244.54
  5. Step 5: Solve for x
    x = 46,134,737,244.54/186,805.80
  6. Step 6: Final answer
    x = 246,966.30

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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.