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Finding the Fourth Proportional to 104,409.41, 156,638.41 and 45,251.06

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Solution

The fourth proportional to 104,409.41, 156,638.41 and 45,251.06 is: 67,887.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,409.41 : 156,638.41 = 45,251.06 : x
  2. Step 2: Convert to fraction form
    104,409.41/156,638.41 = 45,251.06/x
  3. Step 3: Cross multiply
    104,409.41x = 156,638.41 × 45,251.06
  4. Step 4: Simplify right side
    104,409.41x = 7,088,053,192.89
  5. Step 5: Solve for x
    x = 7,088,053,192.89/104,409.41
  6. Step 6: Final answer
    x = 67,887.11

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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.