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Finding the Fourth Proportional to 173,428.40, 259,948.20 and 73,571.60

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Solution

The fourth proportional to 173,428.40, 259,948.20 and 73,571.60 is: 110,274.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,428.40 : 259,948.20 = 73,571.60 : x
  2. Step 2: Convert to fraction form
    173,428.40/259,948.20 = 73,571.60/x
  3. Step 3: Cross multiply
    173,428.40x = 259,948.20 × 73,571.60
  4. Step 4: Simplify right side
    173,428.40x = 19,124,804,991.12
  5. Step 5: Solve for x
    x = 19,124,804,991.12/173,428.40
  6. Step 6: Final answer
    x = 110,274.93

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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.