Home / 196,647,986.60-295,307,903.10-128,791,500.20

Finding the Fourth Proportional to 196,647,986.60, 295,307,903.10 and 128,791,500.20

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Solution

The fourth proportional to 196,647,986.60, 295,307,903.10 and 128,791,500.20 is: 193,407,257.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,647,986.60 : 295,307,903.10 = 128,791,500.20 : x
  2. Step 2: Convert to fraction form
    196,647,986.60/295,307,903.10 = 128,791,500.20/x
  3. Step 3: Cross multiply
    196,647,986.60x = 295,307,903.10 × 128,791,500.20
  4. Step 4: Simplify right side
    196,647,986.60x = 38,033,147,861,165,232
  5. Step 5: Solve for x
    x = 38,033,147,861,165,232/196,647,986.60
  6. Step 6: Final answer
    x = 193,407,257.91

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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.