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Finding the Fourth Proportional to 104,137, 156,253.10 and 56,681

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Solution

The fourth proportional to 104,137, 156,253.10 and 56,681 is: 85,047.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,137 : 156,253.10 = 56,681 : x
  2. Step 2: Convert to fraction form
    104,137/156,253.10 = 56,681/x
  3. Step 3: Cross multiply
    104,137x = 156,253.10 × 56,681
  4. Step 4: Simplify right side
    104,137x = 8,856,581,961.10
  5. Step 5: Solve for x
    x = 8,856,581,961.10/104,137
  6. Step 6: Final answer
    x = 85,047.41

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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.