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Finding the Fourth Proportional to 177,644,215.90, 266,914,221.45 and 112,978,999.90

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Solution

The fourth proportional to 177,644,215.90, 266,914,221.45 and 112,978,999.90 is: 169,753,355.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,644,215.90 : 266,914,221.45 = 112,978,999.90 : x
  2. Step 2: Convert to fraction form
    177,644,215.90/266,914,221.45 = 112,978,999.90/x
  3. Step 3: Cross multiply
    177,644,215.90x = 266,914,221.45 × 112,978,999.90
  4. Step 4: Simplify right side
    177,644,215.90x = 30,155,701,798,508,128
  5. Step 5: Solve for x
    x = 30,155,701,798,508,128/177,644,215.90
  6. Step 6: Final answer
    x = 169,753,355.86

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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.