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Finding the Fourth Proportional to 172,368,891.60, 258,553,337.40 and 133,821,704.40

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Solution

The fourth proportional to 172,368,891.60, 258,553,337.40 and 133,821,704.40 is: 200,732,556.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,368,891.60 : 258,553,337.40 = 133,821,704.40 : x
  2. Step 2: Convert to fraction form
    172,368,891.60/258,553,337.40 = 133,821,704.40/x
  3. Step 3: Cross multiply
    172,368,891.60x = 258,553,337.40 × 133,821,704.40
  4. Step 4: Simplify right side
    172,368,891.60x = 34,600,048,289,176,268
  5. Step 5: Solve for x
    x = 34,600,048,289,176,268/172,368,891.60
  6. Step 6: Final answer
    x = 200,732,556.60

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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.