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Finding the Fourth Proportional to 104,611.50, 156,905.90 and 61,921.26

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Solution

The fourth proportional to 104,611.50, 156,905.90 and 61,921.26 is: 92,875.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,611.50 : 156,905.90 = 61,921.26 : x
  2. Step 2: Convert to fraction form
    104,611.50/156,905.90 = 61,921.26/x
  3. Step 3: Cross multiply
    104,611.50x = 156,905.90 × 61,921.26
  4. Step 4: Simplify right side
    104,611.50x = 9,715,810,244.90
  5. Step 5: Solve for x
    x = 9,715,810,244.90/104,611.50
  6. Step 6: Final answer
    x = 92,875.17

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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.