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Finding the Fourth Proportional to 19,406.91, 29,110.37 and 15,492.99

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Solution

The fourth proportional to 19,406.91, 29,110.37 and 15,492.99 is: 23,239.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,406.91 : 29,110.37 = 15,492.99 : x
  2. Step 2: Convert to fraction form
    19,406.91/29,110.37 = 15,492.99/x
  3. Step 3: Cross multiply
    19,406.91x = 29,110.37 × 15,492.99
  4. Step 4: Simplify right side
    19,406.91x = 451,006,593.84
  5. Step 5: Solve for x
    x = 451,006,593.84/19,406.91
  6. Step 6: Final answer
    x = 23,239.49

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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.