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Finding the Fourth Proportional to 12,566.60, 18,859.26 and 4,790.60

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Solution

The fourth proportional to 12,566.60, 18,859.26 and 4,790.60 is: 7,189.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,566.60 : 18,859.26 = 4,790.60 : x
  2. Step 2: Convert to fraction form
    12,566.60/18,859.26 = 4,790.60/x
  3. Step 3: Cross multiply
    12,566.60x = 18,859.26 × 4,790.60
  4. Step 4: Simplify right side
    12,566.60x = 90,347,170.96
  5. Step 5: Solve for x
    x = 90,347,170.96/12,566.60
  6. Step 6: Final answer
    x = 7,189.47

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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.