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Finding the Fourth Proportional to 12,704.76, 17,532.36 and 7,039.46

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Solution

The fourth proportional to 12,704.76, 17,532.36 and 7,039.46 is: 9,714.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,704.76 : 17,532.36 = 7,039.46 : x
  2. Step 2: Convert to fraction form
    12,704.76/17,532.36 = 7,039.46/x
  3. Step 3: Cross multiply
    12,704.76x = 17,532.36 × 7,039.46
  4. Step 4: Simplify right side
    12,704.76x = 123,418,346.93
  5. Step 5: Solve for x
    x = 123,418,346.93/12,704.76
  6. Step 6: Final answer
    x = 9,714.34

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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.