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Finding the Fourth Proportional to 70,639.32, 105,860.46 and 53,088.60

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Solution

The fourth proportional to 70,639.32, 105,860.46 and 53,088.60 is: 79,558.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,639.32 : 105,860.46 = 53,088.60 : x
  2. Step 2: Convert to fraction form
    70,639.32/105,860.46 = 53,088.60/x
  3. Step 3: Cross multiply
    70,639.32x = 105,860.46 × 53,088.60
  4. Step 4: Simplify right side
    70,639.32x = 5,619,983,616.76
  5. Step 5: Solve for x
    x = 5,619,983,616.76/70,639.32
  6. Step 6: Final answer
    x = 79,558.86

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