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Finding the Fourth Proportional to 139,669,968.60, 209,504,952.90 and 139,669,968.60

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Solution

The fourth proportional to 139,669,968.60, 209,504,952.90 and 139,669,968.60 is: 209,504,952.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,669,968.60 : 209,504,952.90 = 139,669,968.60 : x
  2. Step 2: Convert to fraction form
    139,669,968.60/209,504,952.90 = 139,669,968.60/x
  3. Step 3: Cross multiply
    139,669,968.60x = 209,504,952.90 × 139,669,968.60
  4. Step 4: Simplify right side
    139,669,968.60x = 29,261,550,193,087,480
  5. Step 5: Solve for x
    x = 29,261,550,193,087,480/139,669,968.60
  6. Step 6: Final answer
    x = 209,504,952.90

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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.