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Finding the Fourth Proportional to 12,657.31, 17,467.02 and 6,992.45

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Solution

The fourth proportional to 12,657.31, 17,467.02 and 6,992.45 is: 9,649.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,657.31 : 17,467.02 = 6,992.45 : x
  2. Step 2: Convert to fraction form
    12,657.31/17,467.02 = 6,992.45/x
  3. Step 3: Cross multiply
    12,657.31x = 17,467.02 × 6,992.45
  4. Step 4: Simplify right side
    12,657.31x = 122,137,242.17
  5. Step 5: Solve for x
    x = 122,137,242.17/12,657.31
  6. Step 6: Final answer
    x = 9,649.54

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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.