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Finding the Fourth Proportional to 60,273.46, 90,431.88 and 20,834.56

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Solution

The fourth proportional to 60,273.46, 90,431.88 and 20,834.56 is: 31,259.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,273.46 : 90,431.88 = 20,834.56 : x
  2. Step 2: Convert to fraction form
    60,273.46/90,431.88 = 20,834.56/x
  3. Step 3: Cross multiply
    60,273.46x = 90,431.88 × 20,834.56
  4. Step 4: Simplify right side
    60,273.46x = 1,884,108,429.77
  5. Step 5: Solve for x
    x = 1,884,108,429.77/60,273.46
  6. Step 6: Final answer
    x = 31,259.34

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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.