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Finding the Fourth Proportional to 19,561.77, 26,994.87 and 10,609.11

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Solution

The fourth proportional to 19,561.77, 26,994.87 and 10,609.11 is: 14,640.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,561.77 : 26,994.87 = 10,609.11 : x
  2. Step 2: Convert to fraction form
    19,561.77/26,994.87 = 10,609.11/x
  3. Step 3: Cross multiply
    19,561.77x = 26,994.87 × 10,609.11
  4. Step 4: Simplify right side
    19,561.77x = 286,391,545.27
  5. Step 5: Solve for x
    x = 286,391,545.27/19,561.77
  6. Step 6: Final answer
    x = 14,640.37

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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.