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Finding the Fourth Proportional to 174,961.20, 262,441.80 and 172,045.20

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Solution

The fourth proportional to 174,961.20, 262,441.80 and 172,045.20 is: 258,067.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,961.20 : 262,441.80 = 172,045.20 : x
  2. Step 2: Convert to fraction form
    174,961.20/262,441.80 = 172,045.20/x
  3. Step 3: Cross multiply
    174,961.20x = 262,441.80 × 172,045.20
  4. Step 4: Simplify right side
    174,961.20x = 45,151,851,969.36
  5. Step 5: Solve for x
    x = 45,151,851,969.36/174,961.20
  6. Step 6: Final answer
    x = 258,067.80

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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.