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Finding the Fourth Proportional to 100,811,919.30, 151,217,878.95 and 100,811,919.30

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Solution

The fourth proportional to 100,811,919.30, 151,217,878.95 and 100,811,919.30 is: 151,217,878.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,811,919.30 : 151,217,878.95 = 100,811,919.30 : x
  2. Step 2: Convert to fraction form
    100,811,919.30/151,217,878.95 = 100,811,919.30/x
  3. Step 3: Cross multiply
    100,811,919.30x = 151,217,878.95 × 100,811,919.30
  4. Step 4: Simplify right side
    100,811,919.30x = 15,244,564,609,424,568
  5. Step 5: Solve for x
    x = 15,244,564,609,424,568/100,811,919.30
  6. Step 6: Final answer
    x = 151,217,878.95

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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.