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Finding the Fourth Proportional to 104,708.79, 156,813.03 and 57,252.92

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Solution

The fourth proportional to 104,708.79, 156,813.03 and 57,252.92 is: 85,742.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,708.79 : 156,813.03 = 57,252.92 : x
  2. Step 2: Convert to fraction form
    104,708.79/156,813.03 = 57,252.92/x
  3. Step 3: Cross multiply
    104,708.79x = 156,813.03 × 57,252.92
  4. Step 4: Simplify right side
    104,708.79x = 8,978,003,077.48
  5. Step 5: Solve for x
    x = 8,978,003,077.48/104,708.79
  6. Step 6: Final answer
    x = 85,742.59

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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.