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Finding the Fourth Proportional to 102,722.70, 153,986.85 and 60,635.10

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Solution

The fourth proportional to 102,722.70, 153,986.85 and 60,635.10 is: 90,895.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,722.70 : 153,986.85 = 60,635.10 : x
  2. Step 2: Convert to fraction form
    102,722.70/153,986.85 = 60,635.10/x
  3. Step 3: Cross multiply
    102,722.70x = 153,986.85 × 60,635.10
  4. Step 4: Simplify right side
    102,722.70x = 9,337,008,048.44
  5. Step 5: Solve for x
    x = 9,337,008,048.44/102,722.70
  6. Step 6: Final answer
    x = 90,895.27

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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.