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Finding the Fourth Proportional to 91,785.48, 137,672.58 and 54,582.30

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Solution

The fourth proportional to 91,785.48, 137,672.58 and 54,582.30 is: 81,870.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,785.48 : 137,672.58 = 54,582.30 : x
  2. Step 2: Convert to fraction form
    91,785.48/137,672.58 = 54,582.30/x
  3. Step 3: Cross multiply
    91,785.48x = 137,672.58 × 54,582.30
  4. Step 4: Simplify right side
    91,785.48x = 7,514,486,063.33
  5. Step 5: Solve for x
    x = 7,514,486,063.33/91,785.48
  6. Step 6: Final answer
    x = 81,870.10

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