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Finding the Fourth Proportional to 10,345.50, 14,276.79 and 5,629.82

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Solution

The fourth proportional to 10,345.50, 14,276.79 and 5,629.82 is: 7,769.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,345.50 : 14,276.79 = 5,629.82 : x
  2. Step 2: Convert to fraction form
    10,345.50/14,276.79 = 5,629.82/x
  3. Step 3: Cross multiply
    10,345.50x = 14,276.79 × 5,629.82
  4. Step 4: Simplify right side
    10,345.50x = 80,375,686.49
  5. Step 5: Solve for x
    x = 80,375,686.49/10,345.50
  6. Step 6: Final answer
    x = 7,769.14

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.