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Finding the Fourth Proportional to 529,111.22, 730,179.39 and 311,368.03

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Solution

The fourth proportional to 529,111.22, 730,179.39 and 311,368.03 is: 429,691.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,111.22 : 730,179.39 = 311,368.03 : x
  2. Step 2: Convert to fraction form
    529,111.22/730,179.39 = 311,368.03/x
  3. Step 3: Cross multiply
    529,111.22x = 730,179.39 × 311,368.03
  4. Step 4: Simplify right side
    529,111.22x = 227,354,517,553.08
  5. Step 5: Solve for x
    x = 227,354,517,553.08/529,111.22
  6. Step 6: Final answer
    x = 429,691.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.