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Finding the Fourth Proportional to 19,544.92, 29,300.94 and 6,390.12

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Solution

The fourth proportional to 19,544.92, 29,300.94 and 6,390.12 is: 9,579.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,544.92 : 29,300.94 = 6,390.12 : x
  2. Step 2: Convert to fraction form
    19,544.92/29,300.94 = 6,390.12/x
  3. Step 3: Cross multiply
    19,544.92x = 29,300.94 × 6,390.12
  4. Step 4: Simplify right side
    19,544.92x = 187,236,522.71
  5. Step 5: Solve for x
    x = 187,236,522.71/19,544.92
  6. Step 6: Final answer
    x = 9,579.81

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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.