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Finding the Fourth Proportional to 28,338, 42,474.12 and 25,057.48

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Solution

The fourth proportional to 28,338, 42,474.12 and 25,057.48 is: 37,557.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,338 : 42,474.12 = 25,057.48 : x
  2. Step 2: Convert to fraction form
    28,338/42,474.12 = 25,057.48/x
  3. Step 3: Cross multiply
    28,338x = 42,474.12 × 25,057.48
  4. Step 4: Simplify right side
    28,338x = 1,064,294,412.42
  5. Step 5: Solve for x
    x = 1,064,294,412.42/28,338
  6. Step 6: Final answer
    x = 37,557.15

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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.