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Finding the Fourth Proportional to 12,343.05, 17,032.99 and 7,039.57

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Solution

The fourth proportional to 12,343.05, 17,032.99 and 7,039.57 is: 9,714.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,343.05 : 17,032.99 = 7,039.57 : x
  2. Step 2: Convert to fraction form
    12,343.05/17,032.99 = 7,039.57/x
  3. Step 3: Cross multiply
    12,343.05x = 17,032.99 × 7,039.57
  4. Step 4: Simplify right side
    12,343.05x = 119,904,957.48
  5. Step 5: Solve for x
    x = 119,904,957.48/12,343.05
  6. Step 6: Final answer
    x = 9,714.37

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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.