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Finding the Fourth Proportional to 67,264.56, 100,907.91 and 20,506.50

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Solution

The fourth proportional to 67,264.56, 100,907.91 and 20,506.50 is: 30,763.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,264.56 : 100,907.91 = 20,506.50 : x
  2. Step 2: Convert to fraction form
    67,264.56/100,907.91 = 20,506.50/x
  3. Step 3: Cross multiply
    67,264.56x = 100,907.91 × 20,506.50
  4. Step 4: Simplify right side
    67,264.56x = 2,069,268,056.42
  5. Step 5: Solve for x
    x = 2,069,268,056.42/67,264.56
  6. Step 6: Final answer
    x = 30,763.12

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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.