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Finding the Fourth Proportional to 10,479.65, 15,719.46 and 2,688.46

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Solution

The fourth proportional to 10,479.65, 15,719.46 and 2,688.46 is: 4,032.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,479.65 : 15,719.46 = 2,688.46 : x
  2. Step 2: Convert to fraction form
    10,479.65/15,719.46 = 2,688.46/x
  3. Step 3: Cross multiply
    10,479.65x = 15,719.46 × 2,688.46
  4. Step 4: Simplify right side
    10,479.65x = 42,261,090.05
  5. Step 5: Solve for x
    x = 42,261,090.05/10,479.65
  6. Step 6: Final answer
    x = 4,032.68

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