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Finding the Fourth Proportional to 174,920.40, 262,644.60 and 139,755.60

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Solution

The fourth proportional to 174,920.40, 262,644.60 and 139,755.60 is: 209,844.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,920.40 : 262,644.60 = 139,755.60 : x
  2. Step 2: Convert to fraction form
    174,920.40/262,644.60 = 139,755.60/x
  3. Step 3: Cross multiply
    174,920.40x = 262,644.60 × 139,755.60
  4. Step 4: Simplify right side
    174,920.40x = 36,706,053,659.76
  5. Step 5: Solve for x
    x = 36,706,053,659.76/174,920.40
  6. Step 6: Final answer
    x = 209,844.33

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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.