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Finding the Fourth Proportional to 216,907.45, 325,240.47 and 67,106.05

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Solution

The fourth proportional to 216,907.45, 325,240.47 and 67,106.05 is: 100,621.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,907.45 : 325,240.47 = 67,106.05 : x
  2. Step 2: Convert to fraction form
    216,907.45/325,240.47 = 67,106.05/x
  3. Step 3: Cross multiply
    216,907.45x = 325,240.47 × 67,106.05
  4. Step 4: Simplify right side
    216,907.45x = 21,825,603,241.84
  5. Step 5: Solve for x
    x = 21,825,603,241.84/216,907.45
  6. Step 6: Final answer
    x = 100,621.73

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1.5x scale

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.