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Finding the Fourth Proportional to 126,693.40, 174,855.44 and 72,967.96

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Solution

The fourth proportional to 126,693.40, 174,855.44 and 72,967.96 is: 100,706.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,693.40 : 174,855.44 = 72,967.96 : x
  2. Step 2: Convert to fraction form
    126,693.40/174,855.44 = 72,967.96/x
  3. Step 3: Cross multiply
    126,693.40x = 174,855.44 × 72,967.96
  4. Step 4: Simplify right side
    126,693.40x = 12,758,844,751.70
  5. Step 5: Solve for x
    x = 12,758,844,751.70/126,693.40
  6. Step 6: Final answer
    x = 100,706.47

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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.