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Finding the Fourth Proportional to 65,870.40, 98,575.20 and 60,340.80

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Solution

The fourth proportional to 65,870.40, 98,575.20 and 60,340.80 is: 90,300.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,870.40 : 98,575.20 = 60,340.80 : x
  2. Step 2: Convert to fraction form
    65,870.40/98,575.20 = 60,340.80/x
  3. Step 3: Cross multiply
    65,870.40x = 98,575.20 × 60,340.80
  4. Step 4: Simplify right side
    65,870.40x = 5,948,106,428.16
  5. Step 5: Solve for x
    x = 5,948,106,428.16/65,870.40
  6. Step 6: Final answer
    x = 90,300.14

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