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Finding the Fourth Proportional to 266,771,427.60, 400,057,608.60 and 105,179,926.80

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Solution

The fourth proportional to 266,771,427.60, 400,057,608.60 and 105,179,926.80 is: 157,730,647.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,771,427.60 : 400,057,608.60 = 105,179,926.80 : x
  2. Step 2: Convert to fraction form
    266,771,427.60/400,057,608.60 = 105,179,926.80/x
  3. Step 3: Cross multiply
    266,771,427.60x = 400,057,608.60 × 105,179,926.80
  4. Step 4: Simplify right side
    266,771,427.60x = 42,078,029,988,331,048
  5. Step 5: Solve for x
    x = 42,078,029,988,331,048/266,771,427.60
  6. Step 6: Final answer
    x = 157,730,647.42

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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.