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Finding the Fourth Proportional to 86,931.29, 130,396.94 and 47,466.88

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Solution

The fourth proportional to 86,931.29, 130,396.94 and 47,466.88 is: 71,200.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,931.29 : 130,396.94 = 47,466.88 : x
  2. Step 2: Convert to fraction form
    86,931.29/130,396.94 = 47,466.88/x
  3. Step 3: Cross multiply
    86,931.29x = 130,396.94 × 47,466.88
  4. Step 4: Simplify right side
    86,931.29x = 6,189,535,518.02
  5. Step 5: Solve for x
    x = 6,189,535,518.02/86,931.29
  6. Step 6: Final answer
    x = 71,200.32

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