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Finding the Fourth Proportional to 198,390.63, 273,862.83 and 133,947.18

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Solution

The fourth proportional to 198,390.63, 273,862.83 and 133,947.18 is: 184,903.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,390.63 : 273,862.83 = 133,947.18 : x
  2. Step 2: Convert to fraction form
    198,390.63/273,862.83 = 133,947.18/x
  3. Step 3: Cross multiply
    198,390.63x = 273,862.83 × 133,947.18
  4. Step 4: Simplify right side
    198,390.63x = 36,683,153,785.32
  5. Step 5: Solve for x
    x = 36,683,153,785.32/198,390.63
  6. Step 6: Final answer
    x = 184,903.66

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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.