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Finding the Fourth Proportional to 193,842,187.20, 290,763,280.80 and 186,189,436.80

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Solution

The fourth proportional to 193,842,187.20, 290,763,280.80 and 186,189,436.80 is: 279,284,155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,842,187.20 : 290,763,280.80 = 186,189,436.80 : x
  2. Step 2: Convert to fraction form
    193,842,187.20/290,763,280.80 = 186,189,436.80/x
  3. Step 3: Cross multiply
    193,842,187.20x = 290,763,280.80 × 186,189,436.80
  4. Step 4: Simplify right side
    193,842,187.20x = 54,137,051,494,272,256
  5. Step 5: Solve for x
    x = 54,137,051,494,272,256/193,842,187.20
  6. Step 6: Final answer
    x = 279,284,155.20

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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.