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Finding the Fourth Proportional to 18,699.63, 28,053.27 and 7,606.23

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Solution

The fourth proportional to 18,699.63, 28,053.27 and 7,606.23 is: 11,410.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,699.63 : 28,053.27 = 7,606.23 : x
  2. Step 2: Convert to fraction form
    18,699.63/28,053.27 = 7,606.23/x
  3. Step 3: Cross multiply
    18,699.63x = 28,053.27 × 7,606.23
  4. Step 4: Simplify right side
    18,699.63x = 213,379,623.87
  5. Step 5: Solve for x
    x = 213,379,623.87/18,699.63
  6. Step 6: Final answer
    x = 11,410.90

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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.