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Finding the Fourth Proportional to 567,415.90, 851,123.85 and 287,479.90

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Solution

The fourth proportional to 567,415.90, 851,123.85 and 287,479.90 is: 431,219.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,415.90 : 851,123.85 = 287,479.90 : x
  2. Step 2: Convert to fraction form
    567,415.90/851,123.85 = 287,479.90/x
  3. Step 3: Cross multiply
    567,415.90x = 851,123.85 × 287,479.90
  4. Step 4: Simplify right side
    567,415.90x = 244,680,999,285.62
  5. Step 5: Solve for x
    x = 244,680,999,285.62/567,415.90
  6. Step 6: Final answer
    x = 431,219.85

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.