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Finding the Fourth Proportional to 74,825.87, 112,205.78 and 28,045.94

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Solution

The fourth proportional to 74,825.87, 112,205.78 and 28,045.94 is: 42,056.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,825.87 : 112,205.78 = 28,045.94 : x
  2. Step 2: Convert to fraction form
    74,825.87/112,205.78 = 28,045.94/x
  3. Step 3: Cross multiply
    74,825.87x = 112,205.78 × 28,045.94
  4. Step 4: Simplify right side
    74,825.87x = 3,146,916,433.30
  5. Step 5: Solve for x
    x = 3,146,916,433.30/74,825.87
  6. Step 6: Final answer
    x = 42,056.53

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Why These Related Problems?

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