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Finding the Fourth Proportional to 28,245.75, 42,327.75 and 15,597.99

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Solution

The fourth proportional to 28,245.75, 42,327.75 and 15,597.99 is: 23,374.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,245.75 : 42,327.75 = 15,597.99 : x
  2. Step 2: Convert to fraction form
    28,245.75/42,327.75 = 15,597.99/x
  3. Step 3: Cross multiply
    28,245.75x = 42,327.75 × 15,597.99
  4. Step 4: Simplify right side
    28,245.75x = 660,227,821.22
  5. Step 5: Solve for x
    x = 660,227,821.22/28,245.75
  6. Step 6: Final answer
    x = 23,374.41

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1.5x scale

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.