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Finding the Fourth Proportional to 197,188, 295,851.12 and 86,388.64

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Solution

The fourth proportional to 197,188, 295,851.12 and 86,388.64 is: 129,613.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,188 : 295,851.12 = 86,388.64 : x
  2. Step 2: Convert to fraction form
    197,188/295,851.12 = 86,388.64/x
  3. Step 3: Cross multiply
    197,188x = 295,851.12 × 86,388.64
  4. Step 4: Simplify right side
    197,188x = 25,558,175,899.28
  5. Step 5: Solve for x
    x = 25,558,175,899.28/197,188
  6. Step 6: Final answer
    x = 129,613.24

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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.