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Finding the Fourth Proportional to 92,603.99, 138,919.23 and 28,567.55

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Solution

The fourth proportional to 92,603.99, 138,919.23 and 28,567.55 is: 42,855.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,603.99 : 138,919.23 = 28,567.55 : x
  2. Step 2: Convert to fraction form
    92,603.99/138,919.23 = 28,567.55/x
  3. Step 3: Cross multiply
    92,603.99x = 138,919.23 × 28,567.55
  4. Step 4: Simplify right side
    92,603.99x = 3,968,582,396.28
  5. Step 5: Solve for x
    x = 3,968,582,396.28/92,603.99
  6. Step 6: Final answer
    x = 42,855.41

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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.