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Finding the Fourth Proportional to 14,609.87, 20,161.62 and 7,895.51

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Solution

The fourth proportional to 14,609.87, 20,161.62 and 7,895.51 is: 10,895.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,609.87 : 20,161.62 = 7,895.51 : x
  2. Step 2: Convert to fraction form
    14,609.87/20,161.62 = 7,895.51/x
  3. Step 3: Cross multiply
    14,609.87x = 20,161.62 × 7,895.51
  4. Step 4: Simplify right side
    14,609.87x = 159,186,272.33
  5. Step 5: Solve for x
    x = 159,186,272.33/14,609.87
  6. Step 6: Final answer
    x = 10,895.80

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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.