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Finding the Fourth Proportional to 67,213,836.45, 100,820,754.68 and 67,213,836.45

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Solution

The fourth proportional to 67,213,836.45, 100,820,754.68 and 67,213,836.45 is: 100,820,754.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,213,836.45 : 100,820,754.68 = 67,213,836.45 : x
  2. Step 2: Convert to fraction form
    67,213,836.45/100,820,754.68 = 67,213,836.45/x
  3. Step 3: Cross multiply
    67,213,836.45x = 100,820,754.68 × 67,213,836.45
  4. Step 4: Simplify right side
    67,213,836.45x = 6,776,549,715,491,023
  5. Step 5: Solve for x
    x = 6,776,549,715,491,023/67,213,836.45
  6. Step 6: Final answer
    x = 100,820,754.68

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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.