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Finding the Fourth Proportional to 125,563.96, 173,278.38 and 68,978.98

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Solution

The fourth proportional to 125,563.96, 173,278.38 and 68,978.98 is: 95,191.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,563.96 : 173,278.38 = 68,978.98 : x
  2. Step 2: Convert to fraction form
    125,563.96/173,278.38 = 68,978.98/x
  3. Step 3: Cross multiply
    125,563.96x = 173,278.38 × 68,978.98
  4. Step 4: Simplify right side
    125,563.96x = 11,952,565,908.45
  5. Step 5: Solve for x
    x = 11,952,565,908.45/125,563.96
  6. Step 6: Final answer
    x = 95,191.06

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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.