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Finding the Fourth Proportional to 173,128.20, 259,692.30 and 162,630.60

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Solution

The fourth proportional to 173,128.20, 259,692.30 and 162,630.60 is: 243,945.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,128.20 : 259,692.30 = 162,630.60 : x
  2. Step 2: Convert to fraction form
    173,128.20/259,692.30 = 162,630.60/x
  3. Step 3: Cross multiply
    173,128.20x = 259,692.30 × 162,630.60
  4. Step 4: Simplify right side
    173,128.20x = 42,233,914,564.38
  5. Step 5: Solve for x
    x = 42,233,914,564.38/173,128.20
  6. Step 6: Final answer
    x = 243,945.90

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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.