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Finding the Fourth Proportional to 25,850.80, 38,779.80 and 11,059.60

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Solution

The fourth proportional to 25,850.80, 38,779.80 and 11,059.60 is: 16,590.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,850.80 : 38,779.80 = 11,059.60 : x
  2. Step 2: Convert to fraction form
    25,850.80/38,779.80 = 11,059.60/x
  3. Step 3: Cross multiply
    25,850.80x = 38,779.80 × 11,059.60
  4. Step 4: Simplify right side
    25,850.80x = 428,889,076.08
  5. Step 5: Solve for x
    x = 428,889,076.08/25,850.80
  6. Step 6: Final answer
    x = 16,590.94

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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.