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Finding the Fourth Proportional to 218,093,636.80, 326,862,592.80 and 115,906,628.80

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Solution

The fourth proportional to 218,093,636.80, 326,862,592.80 and 115,906,628.80 is: 173,712,272.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,093,636.80 : 326,862,592.80 = 115,906,628.80 : x
  2. Step 2: Convert to fraction form
    218,093,636.80/326,862,592.80 = 115,906,628.80/x
  3. Step 3: Cross multiply
    218,093,636.80x = 326,862,592.80 × 115,906,628.80
  4. Step 4: Simplify right side
    218,093,636.80x = 37,885,541,212,275,152
  5. Step 5: Solve for x
    x = 37,885,541,212,275,152/218,093,636.80
  6. Step 6: Final answer
    x = 173,712,272.25

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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.