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Finding the Fourth Proportional to 15,807.12, 23,710.68 and 5,418.96

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Solution

The fourth proportional to 15,807.12, 23,710.68 and 5,418.96 is: 8,128.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,807.12 : 23,710.68 = 5,418.96 : x
  2. Step 2: Convert to fraction form
    15,807.12/23,710.68 = 5,418.96/x
  3. Step 3: Cross multiply
    15,807.12x = 23,710.68 × 5,418.96
  4. Step 4: Simplify right side
    15,807.12x = 128,487,226.49
  5. Step 5: Solve for x
    x = 128,487,226.49/15,807.12
  6. Step 6: Final answer
    x = 8,128.44

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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.