Home / 190,756,691.20-286,172,361.60-81,581,651.20

Finding the Fourth Proportional to 190,756,691.20, 286,172,361.60 and 81,581,651.20

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Solution

The fourth proportional to 190,756,691.20, 286,172,361.60 and 81,581,651.20 is: 122,388,439.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,756,691.20 : 286,172,361.60 = 81,581,651.20 : x
  2. Step 2: Convert to fraction form
    190,756,691.20/286,172,361.60 = 81,581,651.20/x
  3. Step 3: Cross multiply
    190,756,691.20x = 286,172,361.60 × 81,581,651.20
  4. Step 4: Simplify right side
    190,756,691.20x = 23,346,413,787,131,476
  5. Step 5: Solve for x
    x = 23,346,413,787,131,476/190,756,691.20
  6. Step 6: Final answer
    x = 122,388,439.64

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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.