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Finding the Fourth Proportional to 19,449.69, 26,838.98 and 10,949.10

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Solution

The fourth proportional to 19,449.69, 26,838.98 and 10,949.10 is: 15,108.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,449.69 : 26,838.98 = 10,949.10 : x
  2. Step 2: Convert to fraction form
    19,449.69/26,838.98 = 10,949.10/x
  3. Step 3: Cross multiply
    19,449.69x = 26,838.98 × 10,949.10
  4. Step 4: Simplify right side
    19,449.69x = 293,862,486.98
  5. Step 5: Solve for x
    x = 293,862,486.98/19,449.69
  6. Step 6: Final answer
    x = 15,108.85

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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.