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Finding the Fourth Proportional to 12,491.44, 17,239.08 and 6,902.32

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Solution

The fourth proportional to 12,491.44, 17,239.08 and 6,902.32 is: 9,525.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,491.44 : 17,239.08 = 6,902.32 : x
  2. Step 2: Convert to fraction form
    12,491.44/17,239.08 = 6,902.32/x
  3. Step 3: Cross multiply
    12,491.44x = 17,239.08 × 6,902.32
  4. Step 4: Simplify right side
    12,491.44x = 118,989,646.67
  5. Step 5: Solve for x
    x = 118,989,646.67/12,491.44
  6. Step 6: Final answer
    x = 9,525.69

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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.