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Finding the Fourth Proportional to 104,703.81, 156,996.03 and 71,464.11

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Solution

The fourth proportional to 104,703.81, 156,996.03 and 71,464.11 is: 107,155.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,703.81 : 156,996.03 = 71,464.11 : x
  2. Step 2: Convert to fraction form
    104,703.81/156,996.03 = 71,464.11/x
  3. Step 3: Cross multiply
    104,703.81x = 156,996.03 × 71,464.11
  4. Step 4: Simplify right side
    104,703.81x = 11,219,581,557.48
  5. Step 5: Solve for x
    x = 11,219,581,557.48/104,703.81
  6. Step 6: Final answer
    x = 107,155.43

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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.