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Finding the Fourth Proportional to 538,092,215.70, 807,138,323.55 and 407,995,458.90

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Solution

The fourth proportional to 538,092,215.70, 807,138,323.55 and 407,995,458.90 is: 611,993,188.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,092,215.70 : 807,138,323.55 = 407,995,458.90 : x
  2. Step 2: Convert to fraction form
    538,092,215.70/807,138,323.55 = 407,995,458.90/x
  3. Step 3: Cross multiply
    538,092,215.70x = 807,138,323.55 × 407,995,458.90
  4. Step 4: Simplify right side
    538,092,215.70x = 329,308,770,712,558,912
  5. Step 5: Solve for x
    x = 329,308,770,712,558,912/538,092,215.70
  6. Step 6: Final answer
    x = 611,993,188.35

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