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Finding the Fourth Proportional to 52,294.09, 72,166.31 and 28,420.78

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Solution

The fourth proportional to 52,294.09, 72,166.31 and 28,420.78 is: 39,220.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,294.09 : 72,166.31 = 28,420.78 : x
  2. Step 2: Convert to fraction form
    52,294.09/72,166.31 = 28,420.78/x
  3. Step 3: Cross multiply
    52,294.09x = 72,166.31 × 28,420.78
  4. Step 4: Simplify right side
    52,294.09x = 2,051,022,819.92
  5. Step 5: Solve for x
    x = 2,051,022,819.92/52,294.09
  6. Step 6: Final answer
    x = 39,220.93

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.