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Finding the Fourth Proportional to 65,161.20, 97,666.20 and 30,104.40

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Solution

The fourth proportional to 65,161.20, 97,666.20 and 30,104.40 is: 45,121.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,161.20 : 97,666.20 = 30,104.40 : x
  2. Step 2: Convert to fraction form
    65,161.20/97,666.20 = 30,104.40/x
  3. Step 3: Cross multiply
    65,161.20x = 97,666.20 × 30,104.40
  4. Step 4: Simplify right side
    65,161.20x = 2,940,182,351.28
  5. Step 5: Solve for x
    x = 2,940,182,351.28/65,161.20
  6. Step 6: Final answer
    x = 45,121.67

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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.