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Finding the Fourth Proportional to 125,364.84, 173,028.95 and 85,091.58

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Solution

The fourth proportional to 125,364.84, 173,028.95 and 85,091.58 is: 117,443.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,364.84 : 173,028.95 = 85,091.58 : x
  2. Step 2: Convert to fraction form
    125,364.84/173,028.95 = 85,091.58/x
  3. Step 3: Cross multiply
    125,364.84x = 173,028.95 × 85,091.58
  4. Step 4: Simplify right side
    125,364.84x = 14,723,306,315.78
  5. Step 5: Solve for x
    x = 14,723,306,315.78/125,364.84
  6. Step 6: Final answer
    x = 117,443.67

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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.