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Finding the Fourth Proportional to 72,608,968.80, 108,910,828.80 and 29,476,954.80

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Solution

The fourth proportional to 72,608,968.80, 108,910,828.80 and 29,476,954.80 is: 44,214,366.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,608,968.80 : 108,910,828.80 = 29,476,954.80 : x
  2. Step 2: Convert to fraction form
    72,608,968.80/108,910,828.80 = 29,476,954.80/x
  3. Step 3: Cross multiply
    72,608,968.80x = 108,910,828.80 × 29,476,954.80
  4. Step 4: Simplify right side
    72,608,968.80x = 3,210,359,577,768,138
  5. Step 5: Solve for x
    x = 3,210,359,577,768,138/72,608,968.80
  6. Step 6: Final answer
    x = 44,214,366.78

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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.