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Finding the Fourth Proportional to 18,609.56, 25,681.74 and 10,654.34

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Solution

The fourth proportional to 18,609.56, 25,681.74 and 10,654.34 is: 14,703.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.56 : 25,681.74 = 10,654.34 : x
  2. Step 2: Convert to fraction form
    18,609.56/25,681.74 = 10,654.34/x
  3. Step 3: Cross multiply
    18,609.56x = 25,681.74 × 10,654.34
  4. Step 4: Simplify right side
    18,609.56x = 273,621,989.75
  5. Step 5: Solve for x
    x = 273,621,989.75/18,609.56
  6. Step 6: Final answer
    x = 14,703.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.