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Finding the Fourth Proportional to 34,892.19, 48,163.75 and 20,745

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Solution

The fourth proportional to 34,892.19, 48,163.75 and 20,745 is: 28,635.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,892.19 : 48,163.75 = 20,745 : x
  2. Step 2: Convert to fraction form
    34,892.19/48,163.75 = 20,745/x
  3. Step 3: Cross multiply
    34,892.19x = 48,163.75 × 20,745
  4. Step 4: Simplify right side
    34,892.19x = 999,156,941.89
  5. Step 5: Solve for x
    x = 999,156,941.89/34,892.19
  6. Step 6: Final answer
    x = 28,635.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.