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Finding the Fourth Proportional to 67,170.99, 92,692.58 and 40,308.15

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Solution

The fourth proportional to 67,170.99, 92,692.58 and 40,308.15 is: 55,623.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,170.99 : 92,692.58 = 40,308.15 : x
  2. Step 2: Convert to fraction form
    67,170.99/92,692.58 = 40,308.15/x
  3. Step 3: Cross multiply
    67,170.99x = 92,692.58 × 40,308.15
  4. Step 4: Simplify right side
    67,170.99x = 3,736,266,216.99
  5. Step 5: Solve for x
    x = 3,736,266,216.99/67,170.99
  6. Step 6: Final answer
    x = 55,623.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.