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Finding the Fourth Proportional to 65,911.79, 98,884.53 and 19,164.67

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Solution

The fourth proportional to 65,911.79, 98,884.53 and 19,164.67 is: 28,751.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,911.79 : 98,884.53 = 19,164.67 : x
  2. Step 2: Convert to fraction form
    65,911.79/98,884.53 = 19,164.67/x
  3. Step 3: Cross multiply
    65,911.79x = 98,884.53 × 19,164.67
  4. Step 4: Simplify right side
    65,911.79x = 1,895,089,138.34
  5. Step 5: Solve for x
    x = 1,895,089,138.34/65,911.79
  6. Step 6: Final answer
    x = 28,751.90

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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.