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Finding the Fourth Proportional to 345,809.52, 477,219.20 and 192,857.40

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Solution

The fourth proportional to 345,809.52, 477,219.20 and 192,857.40 is: 266,144.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,809.52 : 477,219.20 = 192,857.40 : x
  2. Step 2: Convert to fraction form
    345,809.52/477,219.20 = 192,857.40/x
  3. Step 3: Cross multiply
    345,809.52x = 477,219.20 × 192,857.40
  4. Step 4: Simplify right side
    345,809.52x = 92,035,253,177.79
  5. Step 5: Solve for x
    x = 92,035,253,177.79/345,809.52
  6. Step 6: Final answer
    x = 266,144.36

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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.