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Finding the Fourth Proportional to 54,805.16, 75,630.96 and 30,931.76

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Solution

The fourth proportional to 54,805.16, 75,630.96 and 30,931.76 is: 42,685.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,805.16 : 75,630.96 = 30,931.76 : x
  2. Step 2: Convert to fraction form
    54,805.16/75,630.96 = 30,931.76/x
  3. Step 3: Cross multiply
    54,805.16x = 75,630.96 × 30,931.76
  4. Step 4: Simplify right side
    54,805.16x = 2,339,398,703.29
  5. Step 5: Solve for x
    x = 2,339,398,703.29/54,805.16
  6. Step 6: Final answer
    x = 42,685.74

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