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Finding the Fourth Proportional to 245,953,858.92, 368,930,788.41 and 82,191,615.49

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Solution

The fourth proportional to 245,953,858.92, 368,930,788.41 and 82,191,615.49 is: 123,287,423.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,953,858.92 : 368,930,788.41 = 82,191,615.49 : x
  2. Step 2: Convert to fraction form
    245,953,858.92/368,930,788.41 = 82,191,615.49/x
  3. Step 3: Cross multiply
    245,953,858.92x = 368,930,788.41 × 82,191,615.49
  4. Step 4: Simplify right side
    245,953,858.92x = 30,323,017,501,648,672
  5. Step 5: Solve for x
    x = 30,323,017,501,648,672/245,953,858.92
  6. Step 6: Final answer
    x = 123,287,423.24

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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.