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Finding the Fourth Proportional to 28,661.61, 42,902.30 and 18,095.06

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Solution

The fourth proportional to 28,661.61, 42,902.30 and 18,095.06 is: 27,085.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,661.61 : 42,902.30 = 18,095.06 : x
  2. Step 2: Convert to fraction form
    28,661.61/42,902.30 = 18,095.06/x
  3. Step 3: Cross multiply
    28,661.61x = 42,902.30 × 18,095.06
  4. Step 4: Simplify right side
    28,661.61x = 776,319,692.64
  5. Step 5: Solve for x
    x = 776,319,692.64/28,661.61
  6. Step 6: Final answer
    x = 27,085.70

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