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Finding the Fourth Proportional to 572,866.56, 790,570.80 and 318,241.44

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Solution

The fourth proportional to 572,866.56, 790,570.80 and 318,241.44 is: 439,181.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,866.56 : 790,570.80 = 318,241.44 : x
  2. Step 2: Convert to fraction form
    572,866.56/790,570.80 = 318,241.44/x
  3. Step 3: Cross multiply
    572,866.56x = 790,570.80 × 318,241.44
  4. Step 4: Simplify right side
    572,866.56x = 251,592,389,813.95
  5. Step 5: Solve for x
    x = 251,592,389,813.95/572,866.56
  6. Step 6: Final answer
    x = 439,181.49

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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.