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Finding the Fourth Proportional to 86,568.90, 129,962.70 and 46,619.70

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Solution

The fourth proportional to 86,568.90, 129,962.70 and 46,619.70 is: 69,988.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,568.90 : 129,962.70 = 46,619.70 : x
  2. Step 2: Convert to fraction form
    86,568.90/129,962.70 = 46,619.70/x
  3. Step 3: Cross multiply
    86,568.90x = 129,962.70 × 46,619.70
  4. Step 4: Simplify right side
    86,568.90x = 6,058,822,085.19
  5. Step 5: Solve for x
    x = 6,058,822,085.19/86,568.90
  6. Step 6: Final answer
    x = 69,988.44

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