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Finding the Fourth Proportional to 8,710.49, 12,020.49 and 4,731.60

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Solution

The fourth proportional to 8,710.49, 12,020.49 and 4,731.60 is: 6,529.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,710.49 : 12,020.49 = 4,731.60 : x
  2. Step 2: Convert to fraction form
    8,710.49/12,020.49 = 4,731.60/x
  3. Step 3: Cross multiply
    8,710.49x = 12,020.49 × 4,731.60
  4. Step 4: Simplify right side
    8,710.49x = 56,876,195.56
  5. Step 5: Solve for x
    x = 56,876,195.56/8,710.49
  6. Step 6: Final answer
    x = 6,529.62

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Why These Related Problems?

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