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Finding the Fourth Proportional to 192,817.95, 289,049.77 and 66,428.16

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Solution

The fourth proportional to 192,817.95, 289,049.77 and 66,428.16 is: 99,581.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,817.95 : 289,049.77 = 66,428.16 : x
  2. Step 2: Convert to fraction form
    192,817.95/289,049.77 = 66,428.16/x
  3. Step 3: Cross multiply
    192,817.95x = 289,049.77 × 66,428.16
  4. Step 4: Simplify right side
    192,817.95x = 19,201,044,369.52
  5. Step 5: Solve for x
    x = 19,201,044,369.52/192,817.95
  6. Step 6: Final answer
    x = 99,581.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.