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Finding the Fourth Proportional to 28,654.58, 42,959.50 and 13,653.99

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Solution

The fourth proportional to 28,654.58, 42,959.50 and 13,653.99 is: 20,470.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,654.58 : 42,959.50 = 13,653.99 : x
  2. Step 2: Convert to fraction form
    28,654.58/42,959.50 = 13,653.99/x
  3. Step 3: Cross multiply
    28,654.58x = 42,959.50 × 13,653.99
  4. Step 4: Simplify right side
    28,654.58x = 586,568,549.27
  5. Step 5: Solve for x
    x = 586,568,549.27/28,654.58
  6. Step 6: Final answer
    x = 20,470.32

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.