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Finding the Fourth Proportional to 557,129,519.40, 833,710,232.70 and 485,136,978.60

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Solution

The fourth proportional to 557,129,519.40, 833,710,232.70 and 485,136,978.60 is: 725,977,800.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,129,519.40 : 833,710,232.70 = 485,136,978.60 : x
  2. Step 2: Convert to fraction form
    557,129,519.40/833,710,232.70 = 485,136,978.60/x
  3. Step 3: Cross multiply
    557,129,519.40x = 833,710,232.70 × 485,136,978.60
  4. Step 4: Simplify right side
    557,129,519.40x = 404,463,663,319,980,992
  5. Step 5: Solve for x
    x = 404,463,663,319,980,992/557,129,519.40
  6. Step 6: Final answer
    x = 725,977,800.92

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