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Finding the Fourth Proportional to 18,842.70, 28,264.50 and 5,695.02

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Solution

The fourth proportional to 18,842.70, 28,264.50 and 5,695.02 is: 8,542.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,842.70 : 28,264.50 = 5,695.02 : x
  2. Step 2: Convert to fraction form
    18,842.70/28,264.50 = 5,695.02/x
  3. Step 3: Cross multiply
    18,842.70x = 28,264.50 × 5,695.02
  4. Step 4: Simplify right side
    18,842.70x = 160,966,892.79
  5. Step 5: Solve for x
    x = 160,966,892.79/18,842.70
  6. Step 6: Final answer
    x = 8,542.67

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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.