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Finding the Fourth Proportional to 372,879.12, 514,570.56 and 203,113.24

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Solution

The fourth proportional to 372,879.12, 514,570.56 and 203,113.24 is: 280,294.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,879.12 : 514,570.56 = 203,113.24 : x
  2. Step 2: Convert to fraction form
    372,879.12/514,570.56 = 203,113.24/x
  3. Step 3: Cross multiply
    372,879.12x = 514,570.56 × 203,113.24
  4. Step 4: Simplify right side
    372,879.12x = 104,516,093,650.21
  5. Step 5: Solve for x
    x = 104,516,093,650.21/372,879.12
  6. Step 6: Final answer
    x = 280,294.84

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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.