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Finding the Fourth Proportional to 12,976.67, 17,907.71 and 7,313.24

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Solution

The fourth proportional to 12,976.67, 17,907.71 and 7,313.24 is: 10,092.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,976.67 : 17,907.71 = 7,313.24 : x
  2. Step 2: Convert to fraction form
    12,976.67/17,907.71 = 7,313.24/x
  3. Step 3: Cross multiply
    12,976.67x = 17,907.71 × 7,313.24
  4. Step 4: Simplify right side
    12,976.67x = 130,963,254.98
  5. Step 5: Solve for x
    x = 130,963,254.98/12,976.67
  6. Step 6: Final answer
    x = 10,092.21

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1.5x scale

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.