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Finding the Fourth Proportional to 43,915.99, 65,874.15 and 10,636

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Solution

The fourth proportional to 43,915.99, 65,874.15 and 10,636 is: 15,954.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,915.99 : 65,874.15 = 10,636 : x
  2. Step 2: Convert to fraction form
    43,915.99/65,874.15 = 10,636/x
  3. Step 3: Cross multiply
    43,915.99x = 65,874.15 × 10,636
  4. Step 4: Simplify right side
    43,915.99x = 700,637,459.40
  5. Step 5: Solve for x
    x = 700,637,459.40/43,915.99
  6. Step 6: Final answer
    x = 15,954.04

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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.