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Finding the Fourth Proportional to 19,366.40, 29,006.40 and 15,910.40

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Solution

The fourth proportional to 19,366.40, 29,006.40 and 15,910.40 is: 23,830.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,366.40 : 29,006.40 = 15,910.40 : x
  2. Step 2: Convert to fraction form
    19,366.40/29,006.40 = 15,910.40/x
  3. Step 3: Cross multiply
    19,366.40x = 29,006.40 × 15,910.40
  4. Step 4: Simplify right side
    19,366.40x = 461,503,426.56
  5. Step 5: Solve for x
    x = 461,503,426.56/19,366.40
  6. Step 6: Final answer
    x = 23,830.11

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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.