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Finding the Fourth Proportional to 125,765.67, 173,554.87 and 68,403.75

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Solution

The fourth proportional to 125,765.67, 173,554.87 and 68,403.75 is: 94,396.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,765.67 : 173,554.87 = 68,403.75 : x
  2. Step 2: Convert to fraction form
    125,765.67/173,554.87 = 68,403.75/x
  3. Step 3: Cross multiply
    125,765.67x = 173,554.87 × 68,403.75
  4. Step 4: Simplify right side
    125,765.67x = 11,871,803,938.76
  5. Step 5: Solve for x
    x = 11,871,803,938.76/125,765.67
  6. Step 6: Final answer
    x = 94,396.22

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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.