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Finding the Fourth Proportional to 393,713,708.40, 590,393,615.40 and 151,296,044.40

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Solution

The fourth proportional to 393,713,708.40, 590,393,615.40 and 151,296,044.40 is: 226,876,069.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,713,708.40 : 590,393,615.40 = 151,296,044.40 : x
  2. Step 2: Convert to fraction form
    393,713,708.40/590,393,615.40 = 151,296,044.40/x
  3. Step 3: Cross multiply
    393,713,708.40x = 590,393,615.40 × 151,296,044.40
  4. Step 4: Simplify right side
    393,713,708.40x = 89,324,218,649,034,928
  5. Step 5: Solve for x
    x = 89,324,218,649,034,928/393,713,708.40
  6. Step 6: Final answer
    x = 226,876,069.45

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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.