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Finding the Fourth Proportional to 65,081.84, 89,812.68 and 36,401.54

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Solution

The fourth proportional to 65,081.84, 89,812.68 and 36,401.54 is: 50,233.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,081.84 : 89,812.68 = 36,401.54 : x
  2. Step 2: Convert to fraction form
    65,081.84/89,812.68 = 36,401.54/x
  3. Step 3: Cross multiply
    65,081.84x = 89,812.68 × 36,401.54
  4. Step 4: Simplify right side
    65,081.84x = 3,269,319,863.53
  5. Step 5: Solve for x
    x = 3,269,319,863.53/65,081.84
  6. Step 6: Final answer
    x = 50,233.98

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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.