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Finding the Fourth Proportional to 14,045.31, 21,049.79 and 5,715.63

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Solution

The fourth proportional to 14,045.31, 21,049.79 and 5,715.63 is: 8,566.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,045.31 : 21,049.79 = 5,715.63 : x
  2. Step 2: Convert to fraction form
    14,045.31/21,049.79 = 5,715.63/x
  3. Step 3: Cross multiply
    14,045.31x = 21,049.79 × 5,715.63
  4. Step 4: Simplify right side
    14,045.31x = 120,312,782.64
  5. Step 5: Solve for x
    x = 120,312,782.64/14,045.31
  6. Step 6: Final answer
    x = 8,566.05

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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.