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Finding the Fourth Proportional to 192,874.47, 289,325.57 and 66,512.90

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Solution

The fourth proportional to 192,874.47, 289,325.57 and 66,512.90 is: 99,774.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,874.47 : 289,325.57 = 66,512.90 : x
  2. Step 2: Convert to fraction form
    192,874.47/289,325.57 = 66,512.90/x
  3. Step 3: Cross multiply
    192,874.47x = 289,325.57 × 66,512.90
  4. Step 4: Simplify right side
    192,874.47x = 19,243,882,372.29
  5. Step 5: Solve for x
    x = 19,243,882,372.29/192,874.47
  6. Step 6: Final answer
    x = 99,774.13

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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.