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Finding the Fourth Proportional to 19,117.62, 28,676.42 and 5,971.12

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Solution

The fourth proportional to 19,117.62, 28,676.42 and 5,971.12 is: 8,956.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,117.62 : 28,676.42 = 5,971.12 : x
  2. Step 2: Convert to fraction form
    19,117.62/28,676.42 = 5,971.12/x
  3. Step 3: Cross multiply
    19,117.62x = 28,676.42 × 5,971.12
  4. Step 4: Simplify right side
    19,117.62x = 171,230,265.84
  5. Step 5: Solve for x
    x = 171,230,265.84/19,117.62
  6. Step 6: Final answer
    x = 8,956.67

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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.