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Finding the Fourth Proportional to 86,610.84, 119,538.78 and 72,441.24

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Solution

The fourth proportional to 86,610.84, 119,538.78 and 72,441.24 is: 99,982.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,610.84 : 119,538.78 = 72,441.24 : x
  2. Step 2: Convert to fraction form
    86,610.84/119,538.78 = 72,441.24/x
  3. Step 3: Cross multiply
    86,610.84x = 119,538.78 × 72,441.24
  4. Step 4: Simplify right side
    86,610.84x = 8,659,537,451.29
  5. Step 5: Solve for x
    x = 8,659,537,451.29/86,610.84
  6. Step 6: Final answer
    x = 99,982.14

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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.