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Finding the Fourth Proportional to 73,644.80, 110,467.20 and 67,942.40

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Solution

The fourth proportional to 73,644.80, 110,467.20 and 67,942.40 is: 101,913.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,644.80 : 110,467.20 = 67,942.40 : x
  2. Step 2: Convert to fraction form
    73,644.80/110,467.20 = 67,942.40/x
  3. Step 3: Cross multiply
    73,644.80x = 110,467.20 × 67,942.40
  4. Step 4: Simplify right side
    73,644.80x = 7,505,406,689.28
  5. Step 5: Solve for x
    x = 7,505,406,689.28/73,644.80
  6. Step 6: Final answer
    x = 101,913.60

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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.