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Finding the Fourth Proportional to 18,842.60, 25,975.04 and 14,358.56

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Solution

The fourth proportional to 18,842.60, 25,975.04 and 14,358.56 is: 19,793.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,842.60 : 25,975.04 = 14,358.56 : x
  2. Step 2: Convert to fraction form
    18,842.60/25,975.04 = 14,358.56/x
  3. Step 3: Cross multiply
    18,842.60x = 25,975.04 × 14,358.56
  4. Step 4: Simplify right side
    18,842.60x = 372,964,170.34
  5. Step 5: Solve for x
    x = 372,964,170.34/18,842.60
  6. Step 6: Final answer
    x = 19,793.67

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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.