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Finding the Fourth Proportional to 611,765.80, 917,778.30 and 185,266.60

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Solution

The fourth proportional to 611,765.80, 917,778.30 and 185,266.60 is: 277,939.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,765.80 : 917,778.30 = 185,266.60 : x
  2. Step 2: Convert to fraction form
    611,765.80/917,778.30 = 185,266.60/x
  3. Step 3: Cross multiply
    611,765.80x = 917,778.30 × 185,266.60
  4. Step 4: Simplify right side
    611,765.80x = 170,033,665,194.78
  5. Step 5: Solve for x
    x = 170,033,665,194.78/611,765.80
  6. Step 6: Final answer
    x = 277,939.15

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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.