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Finding the Fourth Proportional to 65,154.84, 89,912.78 and 36,475.48

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Solution

The fourth proportional to 65,154.84, 89,912.78 and 36,475.48 is: 50,335.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,154.84 : 89,912.78 = 36,475.48 : x
  2. Step 2: Convert to fraction form
    65,154.84/89,912.78 = 36,475.48/x
  3. Step 3: Cross multiply
    65,154.84x = 89,912.78 × 36,475.48
  4. Step 4: Simplify right side
    65,154.84x = 3,279,611,808.63
  5. Step 5: Solve for x
    x = 3,279,611,808.63/65,154.84
  6. Step 6: Final answer
    x = 50,335.66

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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.