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Finding the Fourth Proportional to 139,414,202.80, 209,121,304.20 and 124,347,850.45

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Solution

The fourth proportional to 139,414,202.80, 209,121,304.20 and 124,347,850.45 is: 186,521,775.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,414,202.80 : 209,121,304.20 = 124,347,850.45 : x
  2. Step 2: Convert to fraction form
    139,414,202.80/209,121,304.20 = 124,347,850.45/x
  3. Step 3: Cross multiply
    139,414,202.80x = 209,121,304.20 × 124,347,850.45
  4. Step 4: Simplify right side
    139,414,202.80x = 26,003,784,660,570,556
  5. Step 5: Solve for x
    x = 26,003,784,660,570,556/139,414,202.80
  6. Step 6: Final answer
    x = 186,521,775.68

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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.