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Finding the Fourth Proportional to 19,411.92, 29,120.44 and 6,934.48

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Solution

The fourth proportional to 19,411.92, 29,120.44 and 6,934.48 is: 10,402.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,411.92 : 29,120.44 = 6,934.48 : x
  2. Step 2: Convert to fraction form
    19,411.92/29,120.44 = 6,934.48/x
  3. Step 3: Cross multiply
    19,411.92x = 29,120.44 × 6,934.48
  4. Step 4: Simplify right side
    19,411.92x = 201,935,108.77
  5. Step 5: Solve for x
    x = 201,935,108.77/19,411.92
  6. Step 6: Final answer
    x = 10,402.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.