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Finding the Fourth Proportional to 608,641,196.78, 913,552,161.42 and 293,728,842.80

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Solution

The fourth proportional to 608,641,196.78, 913,552,161.42 and 293,728,842.80 is: 440,878,173.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,641,196.78 : 913,552,161.42 = 293,728,842.80 : x
  2. Step 2: Convert to fraction form
    608,641,196.78/913,552,161.42 = 293,728,842.80/x
  3. Step 3: Cross multiply
    608,641,196.78x = 913,552,161.42 × 293,728,842.80
  4. Step 4: Simplify right side
    608,641,196.78x = 268,336,619,211,335,392
  5. Step 5: Solve for x
    x = 268,336,619,211,335,392/608,641,196.78
  6. Step 6: Final answer
    x = 440,878,173.60

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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.