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Finding the Fourth Proportional to 68,638.84, 94,780.71 and 43,187.62

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Solution

The fourth proportional to 68,638.84, 94,780.71 and 43,187.62 is: 59,636.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,638.84 : 94,780.71 = 43,187.62 : x
  2. Step 2: Convert to fraction form
    68,638.84/94,780.71 = 43,187.62/x
  3. Step 3: Cross multiply
    68,638.84x = 94,780.71 × 43,187.62
  4. Step 4: Simplify right side
    68,638.84x = 4,093,353,286.81
  5. Step 5: Solve for x
    x = 4,093,353,286.81/68,638.84
  6. Step 6: Final answer
    x = 59,636.11

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1.5x scale

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.