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Finding the Fourth Proportional to 125,137.44, 172,687.95 and 68,549.22

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Solution

The fourth proportional to 125,137.44, 172,687.95 and 68,549.22 is: 94,596.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,137.44 : 172,687.95 = 68,549.22 : x
  2. Step 2: Convert to fraction form
    125,137.44/172,687.95 = 68,549.22/x
  3. Step 3: Cross multiply
    125,137.44x = 172,687.95 × 68,549.22
  4. Step 4: Simplify right side
    125,137.44x = 11,837,624,275.90
  5. Step 5: Solve for x
    x = 11,837,624,275.90/125,137.44
  6. Step 6: Final answer
    x = 94,596.98

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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.