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Finding the Fourth Proportional to 111,875.92, 167,761.86 and 40,749.05

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Solution

The fourth proportional to 111,875.92, 167,761.86 and 40,749.05 is: 61,104.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,875.92 : 167,761.86 = 40,749.05 : x
  2. Step 2: Convert to fraction form
    111,875.92/167,761.86 = 40,749.05/x
  3. Step 3: Cross multiply
    111,875.92x = 167,761.86 × 40,749.05
  4. Step 4: Simplify right side
    111,875.92x = 6,836,136,421.23
  5. Step 5: Solve for x
    x = 6,836,136,421.23/111,875.92
  6. Step 6: Final answer
    x = 61,104.63

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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.