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Finding the Fourth Proportional to 92,147.85, 138,187.22 and 39,530.25

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Solution

The fourth proportional to 92,147.85, 138,187.22 and 39,530.25 is: 59,280.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,147.85 : 138,187.22 = 39,530.25 : x
  2. Step 2: Convert to fraction form
    92,147.85/138,187.22 = 39,530.25/x
  3. Step 3: Cross multiply
    92,147.85x = 138,187.22 × 39,530.25
  4. Step 4: Simplify right side
    92,147.85x = 5,462,575,155.75
  5. Step 5: Solve for x
    x = 5,462,575,155.75/92,147.85
  6. Step 6: Final answer
    x = 59,280.55

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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.