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Finding the Fourth Proportional to 245,953,859.54, 368,930,789.34 and 82,191,616.11

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Solution

The fourth proportional to 245,953,859.54, 368,930,789.34 and 82,191,616.11 is: 123,287,424.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,953,859.54 : 368,930,789.34 = 82,191,616.11 : x
  2. Step 2: Convert to fraction form
    245,953,859.54/368,930,789.34 = 82,191,616.11/x
  3. Step 3: Cross multiply
    245,953,859.54x = 368,930,789.34 × 82,191,616.11
  4. Step 4: Simplify right side
    245,953,859.54x = 30,323,017,806,336,948
  5. Step 5: Solve for x
    x = 30,323,017,806,336,948/245,953,859.54
  6. Step 6: Final answer
    x = 123,287,424.17

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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.