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Finding the Fourth Proportional to 200,798,616.09, 301,325,338.76 and 85,784,023.65

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Solution

The fourth proportional to 200,798,616.09, 301,325,338.76 and 85,784,023.65 is: 128,730,468.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,798,616.09 : 301,325,338.76 = 85,784,023.65 : x
  2. Step 2: Convert to fraction form
    200,798,616.09/301,325,338.76 = 85,784,023.65/x
  3. Step 3: Cross multiply
    200,798,616.09x = 301,325,338.76 × 85,784,023.65
  4. Step 4: Simplify right side
    200,798,616.09x = 25,848,899,987,716,116
  5. Step 5: Solve for x
    x = 25,848,899,987,716,116/200,798,616.09
  6. Step 6: Final answer
    x = 128,730,468.82

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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.