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Finding the Fourth Proportional to 125,387.88, 173,046.12 and 68,810.18

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Solution

The fourth proportional to 125,387.88, 173,046.12 and 68,810.18 is: 94,964.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,387.88 : 173,046.12 = 68,810.18 : x
  2. Step 2: Convert to fraction form
    125,387.88/173,046.12 = 68,810.18/x
  3. Step 3: Cross multiply
    125,387.88x = 173,046.12 × 68,810.18
  4. Step 4: Simplify right side
    125,387.88x = 11,907,334,665.50
  5. Step 5: Solve for x
    x = 11,907,334,665.50/125,387.88
  6. Step 6: Final answer
    x = 94,964.00

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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.