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Finding the Fourth Proportional to 61,867.84, 92,813.36 and 28,136.28

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Solution

The fourth proportional to 61,867.84, 92,813.36 and 28,136.28 is: 42,209.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,867.84 : 92,813.36 = 28,136.28 : x
  2. Step 2: Convert to fraction form
    61,867.84/92,813.36 = 28,136.28/x
  3. Step 3: Cross multiply
    61,867.84x = 92,813.36 × 28,136.28
  4. Step 4: Simplify right side
    61,867.84x = 2,611,422,684.70
  5. Step 5: Solve for x
    x = 2,611,422,684.70/61,867.84
  6. Step 6: Final answer
    x = 42,209.70

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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.