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Finding the Fourth Proportional to 196,991,998.40, 295,487,997.60 and 53,384,830.40

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Solution

The fourth proportional to 196,991,998.40, 295,487,997.60 and 53,384,830.40 is: 80,077,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,991,998.40 : 295,487,997.60 = 53,384,830.40 : x
  2. Step 2: Convert to fraction form
    196,991,998.40/295,487,997.60 = 53,384,830.40/x
  3. Step 3: Cross multiply
    196,991,998.40x = 295,487,997.60 × 53,384,830.40
  4. Step 4: Simplify right side
    196,991,998.40x = 15,774,576,637,111,608
  5. Step 5: Solve for x
    x = 15,774,576,637,111,608/196,991,998.40
  6. Step 6: Final answer
    x = 80,077,245.60

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1.5x scale

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.