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Finding the Fourth Proportional to 572,779.49, 790,347.92 and 331,015.41

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Solution

The fourth proportional to 572,779.49, 790,347.92 and 331,015.41 is: 456,750.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,779.49 : 790,347.92 = 331,015.41 : x
  2. Step 2: Convert to fraction form
    572,779.49/790,347.92 = 331,015.41/x
  3. Step 3: Cross multiply
    572,779.49x = 790,347.92 × 331,015.41
  4. Step 4: Simplify right side
    572,779.49x = 261,617,339,126.37
  5. Step 5: Solve for x
    x = 261,617,339,126.37/572,779.49
  6. Step 6: Final answer
    x = 456,750.54

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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.