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Finding the Fourth Proportional to 198,391.63, 273,864.21 and 133,948.18

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Solution

The fourth proportional to 198,391.63, 273,864.21 and 133,948.18 is: 184,905.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,391.63 : 273,864.21 = 133,948.18 : x
  2. Step 2: Convert to fraction form
    198,391.63/273,864.21 = 133,948.18/x
  3. Step 3: Cross multiply
    198,391.63x = 273,864.21 × 133,948.18
  4. Step 4: Simplify right side
    198,391.63x = 36,683,612,496.64
  5. Step 5: Solve for x
    x = 36,683,612,496.64/198,391.63
  6. Step 6: Final answer
    x = 184,905.04

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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.