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Finding the Fourth Proportional to 111,914.40, 167,871.60 and 38,042.40

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Solution

The fourth proportional to 111,914.40, 167,871.60 and 38,042.40 is: 57,063.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,914.40 : 167,871.60 = 38,042.40 : x
  2. Step 2: Convert to fraction form
    111,914.40/167,871.60 = 38,042.40/x
  3. Step 3: Cross multiply
    111,914.40x = 167,871.60 × 38,042.40
  4. Step 4: Simplify right side
    111,914.40x = 6,386,238,555.84
  5. Step 5: Solve for x
    x = 6,386,238,555.84/111,914.40
  6. Step 6: Final answer
    x = 57,063.60

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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.