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Finding the Fourth Proportional to 156,489.48, 215,922.24 and 92,847.96

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Solution

The fourth proportional to 156,489.48, 215,922.24 and 92,847.96 is: 128,110.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,489.48 : 215,922.24 = 92,847.96 : x
  2. Step 2: Convert to fraction form
    156,489.48/215,922.24 = 92,847.96/x
  3. Step 3: Cross multiply
    156,489.48x = 215,922.24 × 92,847.96
  4. Step 4: Simplify right side
    156,489.48x = 20,047,939,502.63
  5. Step 5: Solve for x
    x = 20,047,939,502.63/156,489.48
  6. Step 6: Final answer
    x = 128,110.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.