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Finding the Fourth Proportional to 74,672.80, 112,009.20 and 52,511.20

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Solution

The fourth proportional to 74,672.80, 112,009.20 and 52,511.20 is: 78,766.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,672.80 : 112,009.20 = 52,511.20 : x
  2. Step 2: Convert to fraction form
    74,672.80/112,009.20 = 52,511.20/x
  3. Step 3: Cross multiply
    74,672.80x = 112,009.20 × 52,511.20
  4. Step 4: Simplify right side
    74,672.80x = 5,881,737,503.04
  5. Step 5: Solve for x
    x = 5,881,737,503.04/74,672.80
  6. Step 6: Final answer
    x = 78,766.80

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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.