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Finding the Fourth Proportional to 125,575.56, 173,293.56 and 68,985.72

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Solution

The fourth proportional to 125,575.56, 173,293.56 and 68,985.72 is: 95,199.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,575.56 : 173,293.56 = 68,985.72 : x
  2. Step 2: Convert to fraction form
    125,575.56/173,293.56 = 68,985.72/x
  3. Step 3: Cross multiply
    125,575.56x = 173,293.56 × 68,985.72
  4. Step 4: Simplify right side
    125,575.56x = 11,954,781,007.96
  5. Step 5: Solve for x
    x = 11,954,781,007.96/125,575.56
  6. Step 6: Final answer
    x = 95,199.90

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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.