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Finding the Fourth Proportional to 27,161.76, 40,743.90 and 14,039.76

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Solution

The fourth proportional to 27,161.76, 40,743.90 and 14,039.76 is: 21,060.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,161.76 : 40,743.90 = 14,039.76 : x
  2. Step 2: Convert to fraction form
    27,161.76/40,743.90 = 14,039.76/x
  3. Step 3: Cross multiply
    27,161.76x = 40,743.90 × 14,039.76
  4. Step 4: Simplify right side
    27,161.76x = 572,034,577.46
  5. Step 5: Solve for x
    x = 572,034,577.46/27,161.76
  6. Step 6: Final answer
    x = 21,060.29

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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.