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Finding the Fourth Proportional to 29,678.34, 40,959.90 and 17,103.18

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Solution

The fourth proportional to 29,678.34, 40,959.90 and 17,103.18 is: 23,604.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,678.34 : 40,959.90 = 17,103.18 : x
  2. Step 2: Convert to fraction form
    29,678.34/40,959.90 = 17,103.18/x
  3. Step 3: Cross multiply
    29,678.34x = 40,959.90 × 17,103.18
  4. Step 4: Simplify right side
    29,678.34x = 700,544,542.48
  5. Step 5: Solve for x
    x = 700,544,542.48/29,678.34
  6. Step 6: Final answer
    x = 23,604.57

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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.