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Finding the Fourth Proportional to 57,191.67, 85,786.29 and 15,638.67

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Solution

The fourth proportional to 57,191.67, 85,786.29 and 15,638.67 is: 23,457.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,191.67 : 85,786.29 = 15,638.67 : x
  2. Step 2: Convert to fraction form
    57,191.67/85,786.29 = 15,638.67/x
  3. Step 3: Cross multiply
    57,191.67x = 85,786.29 × 15,638.67
  4. Step 4: Simplify right side
    57,191.67x = 1,341,583,479.83
  5. Step 5: Solve for x
    x = 1,341,583,479.83/57,191.67
  6. Step 6: Final answer
    x = 23,457.67

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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.