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Finding the Fourth Proportional to 245,868,313.20, 368,802,469.80 and 231,759,538.80

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Solution

The fourth proportional to 245,868,313.20, 368,802,469.80 and 231,759,538.80 is: 347,639,308.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,868,313.20 : 368,802,469.80 = 231,759,538.80 : x
  2. Step 2: Convert to fraction form
    245,868,313.20/368,802,469.80 = 231,759,538.80/x
  3. Step 3: Cross multiply
    245,868,313.20x = 368,802,469.80 × 231,759,538.80
  4. Step 4: Simplify right side
    245,868,313.20x = 85,473,490,309,148,928
  5. Step 5: Solve for x
    x = 85,473,490,309,148,928/245,868,313.20
  6. Step 6: Final answer
    x = 347,639,308.20

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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.