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Finding the Fourth Proportional to 65,358.12, 98,037.18 and 18,611

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Solution

The fourth proportional to 65,358.12, 98,037.18 and 18,611 is: 27,916.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,358.12 : 98,037.18 = 18,611 : x
  2. Step 2: Convert to fraction form
    65,358.12/98,037.18 = 18,611/x
  3. Step 3: Cross multiply
    65,358.12x = 98,037.18 × 18,611
  4. Step 4: Simplify right side
    65,358.12x = 1,824,569,956.98
  5. Step 5: Solve for x
    x = 1,824,569,956.98/65,358.12
  6. Step 6: Final answer
    x = 27,916.50

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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.