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Finding the Fourth Proportional to 372,779.72, 514,441.50 and 203,013.44

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Solution

The fourth proportional to 372,779.72, 514,441.50 and 203,013.44 is: 280,161.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,779.72 : 514,441.50 = 203,013.44 : x
  2. Step 2: Convert to fraction form
    372,779.72/514,441.50 = 203,013.44/x
  3. Step 3: Cross multiply
    372,779.72x = 514,441.50 × 203,013.44
  4. Step 4: Simplify right side
    372,779.72x = 104,438,538,593.76
  5. Step 5: Solve for x
    x = 104,438,538,593.76/372,779.72
  6. Step 6: Final answer
    x = 280,161.54

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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.