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Finding the Fourth Proportional to 98,647.47, 136,136.66 and 56,208.74

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Solution

The fourth proportional to 98,647.47, 136,136.66 and 56,208.74 is: 77,569.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,647.47 : 136,136.66 = 56,208.74 : x
  2. Step 2: Convert to fraction form
    98,647.47/136,136.66 = 56,208.74/x
  3. Step 3: Cross multiply
    98,647.47x = 136,136.66 × 56,208.74
  4. Step 4: Simplify right side
    98,647.47x = 7,652,069,164.68
  5. Step 5: Solve for x
    x = 7,652,069,164.68/98,647.47
  6. Step 6: Final answer
    x = 77,569.85

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