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Finding the Fourth Proportional to 72,841,025.80, 109,261,538.70 and 72,841,025.80

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Solution

The fourth proportional to 72,841,025.80, 109,261,538.70 and 72,841,025.80 is: 109,261,538.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,841,025.80 : 109,261,538.70 = 72,841,025.80 : x
  2. Step 2: Convert to fraction form
    72,841,025.80/109,261,538.70 = 72,841,025.80/x
  3. Step 3: Cross multiply
    72,841,025.80x = 109,261,538.70 × 72,841,025.80
  4. Step 4: Simplify right side
    72,841,025.80x = 7,958,722,559,394,398
  5. Step 5: Solve for x
    x = 7,958,722,559,394,398/72,841,025.80
  6. Step 6: Final answer
    x = 109,261,538.70

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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.