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Finding the Fourth Proportional to 156,123.76, 234,119.92 and 113,739.72

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Solution

The fourth proportional to 156,123.76, 234,119.92 and 113,739.72 is: 170,561.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,123.76 : 234,119.92 = 113,739.72 : x
  2. Step 2: Convert to fraction form
    156,123.76/234,119.92 = 113,739.72/x
  3. Step 3: Cross multiply
    156,123.76x = 234,119.92 × 113,739.72
  4. Step 4: Simplify right side
    156,123.76x = 26,628,734,147.22
  5. Step 5: Solve for x
    x = 26,628,734,147.22/156,123.76
  6. Step 6: Final answer
    x = 170,561.70

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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.