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Finding the Fourth Proportional to 128,563.40, 192,845.10 and 33,793.40

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Solution

The fourth proportional to 128,563.40, 192,845.10 and 33,793.40 is: 50,690.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,563.40 : 192,845.10 = 33,793.40 : x
  2. Step 2: Convert to fraction form
    128,563.40/192,845.10 = 33,793.40/x
  3. Step 3: Cross multiply
    128,563.40x = 192,845.10 × 33,793.40
  4. Step 4: Simplify right side
    128,563.40x = 6,516,891,602.34
  5. Step 5: Solve for x
    x = 6,516,891,602.34/128,563.40
  6. Step 6: Final answer
    x = 50,690.10

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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.