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Finding the Fourth Proportional to 18,409.86, 27,602.19 and 12,866.22

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Solution

The fourth proportional to 18,409.86, 27,602.19 and 12,866.22 is: 19,290.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,409.86 : 27,602.19 = 12,866.22 : x
  2. Step 2: Convert to fraction form
    18,409.86/27,602.19 = 12,866.22/x
  3. Step 3: Cross multiply
    18,409.86x = 27,602.19 × 12,866.22
  4. Step 4: Simplify right side
    18,409.86x = 355,135,849.02
  5. Step 5: Solve for x
    x = 355,135,849.02/18,409.86
  6. Step 6: Final answer
    x = 19,290.52

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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.