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Finding the Fourth Proportional to 67,208.94, 100,745.64 and 42,266.81

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Solution

The fourth proportional to 67,208.94, 100,745.64 and 42,266.81 is: 63,357.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,208.94 : 100,745.64 = 42,266.81 : x
  2. Step 2: Convert to fraction form
    67,208.94/100,745.64 = 42,266.81/x
  3. Step 3: Cross multiply
    67,208.94x = 100,745.64 × 42,266.81
  4. Step 4: Simplify right side
    67,208.94x = 4,258,197,076.07
  5. Step 5: Solve for x
    x = 4,258,197,076.07/67,208.94
  6. Step 6: Final answer
    x = 63,357.60

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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.