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Finding the Fourth Proportional to 567,481.12, 783,129.18 and 312,841.42

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Solution

The fourth proportional to 567,481.12, 783,129.18 and 312,841.42 is: 431,724.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,481.12 : 783,129.18 = 312,841.42 : x
  2. Step 2: Convert to fraction form
    567,481.12/783,129.18 = 312,841.42/x
  3. Step 3: Cross multiply
    567,481.12x = 783,129.18 × 312,841.42
  4. Step 4: Simplify right side
    567,481.12x = 244,995,244,714.64
  5. Step 5: Solve for x
    x = 244,995,244,714.64/567,481.12
  6. Step 6: Final answer
    x = 431,724.05

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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.