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Finding the Fourth Proportional to 28,260, 42,397.56 and 9,792

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Solution

The fourth proportional to 28,260, 42,397.56 and 9,792 is: 14,690.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,260 : 42,397.56 = 9,792 : x
  2. Step 2: Convert to fraction form
    28,260/42,397.56 = 9,792/x
  3. Step 3: Cross multiply
    28,260x = 42,397.56 × 9,792
  4. Step 4: Simplify right side
    28,260x = 415,156,907.52
  5. Step 5: Solve for x
    x = 415,156,907.52/28,260
  6. Step 6: Final answer
    x = 14,690.62

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