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Finding the Fourth Proportional to 28,525.98, 42,788.82 and 7,749.48

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Solution

The fourth proportional to 28,525.98, 42,788.82 and 7,749.48 is: 11,624.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,525.98 : 42,788.82 = 7,749.48 : x
  2. Step 2: Convert to fraction form
    28,525.98/42,788.82 = 7,749.48/x
  3. Step 3: Cross multiply
    28,525.98x = 42,788.82 × 7,749.48
  4. Step 4: Simplify right side
    28,525.98x = 331,591,104.81
  5. Step 5: Solve for x
    x = 331,591,104.81/28,525.98
  6. Step 6: Final answer
    x = 11,624.18

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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.