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Finding the Fourth Proportional to 104,865.70, 156,991.35 and 92,577.70

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Solution

The fourth proportional to 104,865.70, 156,991.35 and 92,577.70 is: 138,595.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,865.70 : 156,991.35 = 92,577.70 : x
  2. Step 2: Convert to fraction form
    104,865.70/156,991.35 = 92,577.70/x
  3. Step 3: Cross multiply
    104,865.70x = 156,991.35 × 92,577.70
  4. Step 4: Simplify right side
    104,865.70x = 14,533,898,102.90
  5. Step 5: Solve for x
    x = 14,533,898,102.90/104,865.70
  6. Step 6: Final answer
    x = 138,595.35

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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.