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Finding the Fourth Proportional to 345,857.78, 477,286.53 and 192,890.90

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Solution

The fourth proportional to 345,857.78, 477,286.53 and 192,890.90 is: 266,191.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,857.78 : 477,286.53 = 192,890.90 : x
  2. Step 2: Convert to fraction form
    345,857.78/477,286.53 = 192,890.90/x
  3. Step 3: Cross multiply
    345,857.78x = 477,286.53 × 192,890.90
  4. Step 4: Simplify right side
    345,857.78x = 92,064,228,799.45
  5. Step 5: Solve for x
    x = 92,064,228,799.45/345,857.78
  6. Step 6: Final answer
    x = 266,191.00

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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.