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Finding the Fourth Proportional to 38,401.61, 57,593.76 and 13,777.61

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Solution

The fourth proportional to 38,401.61, 57,593.76 and 13,777.61 is: 20,663.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,401.61 : 57,593.76 = 13,777.61 : x
  2. Step 2: Convert to fraction form
    38,401.61/57,593.76 = 13,777.61/x
  3. Step 3: Cross multiply
    38,401.61x = 57,593.76 × 13,777.61
  4. Step 4: Simplify right side
    38,401.61x = 793,504,075.74
  5. Step 5: Solve for x
    x = 793,504,075.74/38,401.61
  6. Step 6: Final answer
    x = 20,663.30

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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.