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Finding the Fourth Proportional to 31,018.99, 46,500.87 and 14,356.15

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Solution

The fourth proportional to 31,018.99, 46,500.87 and 14,356.15 is: 21,521.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,018.99 : 46,500.87 = 14,356.15 : x
  2. Step 2: Convert to fraction form
    31,018.99/46,500.87 = 14,356.15/x
  3. Step 3: Cross multiply
    31,018.99x = 46,500.87 × 14,356.15
  4. Step 4: Simplify right side
    31,018.99x = 667,573,464.85
  5. Step 5: Solve for x
    x = 667,573,464.85/31,018.99
  6. Step 6: Final answer
    x = 21,521.44

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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.