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Finding the Fourth Proportional to 531,388.13, 797,079.22 and 132,028.72

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Solution

The fourth proportional to 531,388.13, 797,079.22 and 132,028.72 is: 198,042.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,388.13 : 797,079.22 = 132,028.72 : x
  2. Step 2: Convert to fraction form
    531,388.13/797,079.22 = 132,028.72/x
  3. Step 3: Cross multiply
    531,388.13x = 797,079.22 × 132,028.72
  4. Step 4: Simplify right side
    531,388.13x = 105,237,346,832.43
  5. Step 5: Solve for x
    x = 105,237,346,832.43/531,388.13
  6. Step 6: Final answer
    x = 198,042.34

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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.