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Finding the Fourth Proportional to 28,582.16, 42,900.80 and 13,801.44

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Solution

The fourth proportional to 28,582.16, 42,900.80 and 13,801.44 is: 20,715.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,582.16 : 42,900.80 = 13,801.44 : x
  2. Step 2: Convert to fraction form
    28,582.16/42,900.80 = 13,801.44/x
  3. Step 3: Cross multiply
    28,582.16x = 42,900.80 × 13,801.44
  4. Step 4: Simplify right side
    28,582.16x = 592,092,817.15
  5. Step 5: Solve for x
    x = 592,092,817.15/28,582.16
  6. Step 6: Final answer
    x = 20,715.47

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