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Finding the Fourth Proportional to 18,409.55, 27,743.90 and 16,656.92

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Solution

The fourth proportional to 18,409.55, 27,743.90 and 16,656.92 is: 25,102.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,409.55 : 27,743.90 = 16,656.92 : x
  2. Step 2: Convert to fraction form
    18,409.55/27,743.90 = 16,656.92/x
  3. Step 3: Cross multiply
    18,409.55x = 27,743.90 × 16,656.92
  4. Step 4: Simplify right side
    18,409.55x = 462,127,922.79
  5. Step 5: Solve for x
    x = 462,127,922.79/18,409.55
  6. Step 6: Final answer
    x = 25,102.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.