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Finding the Fourth Proportional to 104,381.48, 156,570.38 and 72,330.99

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Solution

The fourth proportional to 104,381.48, 156,570.38 and 72,330.99 is: 108,495.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,381.48 : 156,570.38 = 72,330.99 : x
  2. Step 2: Convert to fraction form
    104,381.48/156,570.38 = 72,330.99/x
  3. Step 3: Cross multiply
    104,381.48x = 156,570.38 × 72,330.99
  4. Step 4: Simplify right side
    104,381.48x = 11,324,890,590.08
  5. Step 5: Solve for x
    x = 11,324,890,590.08/104,381.48
  6. Step 6: Final answer
    x = 108,495.22

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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.