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Finding the Fourth Proportional to 173,076.40, 259,420.20 and 73,219.60

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Solution

The fourth proportional to 173,076.40, 259,420.20 and 73,219.60 is: 109,747.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,076.40 : 259,420.20 = 73,219.60 : x
  2. Step 2: Convert to fraction form
    173,076.40/259,420.20 = 73,219.60/x
  3. Step 3: Cross multiply
    173,076.40x = 259,420.20 × 73,219.60
  4. Step 4: Simplify right side
    173,076.40x = 18,994,643,275.92
  5. Step 5: Solve for x
    x = 18,994,643,275.92/173,076.40
  6. Step 6: Final answer
    x = 109,747.16

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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.