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Finding the Fourth Proportional to 393,953.97, 591,115.50 and 194,165.45

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Solution

The fourth proportional to 393,953.97, 591,115.50 and 194,165.45 is: 291,339.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,953.97 : 591,115.50 = 194,165.45 : x
  2. Step 2: Convert to fraction form
    393,953.97/591,115.50 = 194,165.45/x
  3. Step 3: Cross multiply
    393,953.97x = 591,115.50 × 194,165.45
  4. Step 4: Simplify right side
    393,953.97x = 114,774,204,103.90
  5. Step 5: Solve for x
    x = 114,774,204,103.90/393,953.97
  6. Step 6: Final answer
    x = 291,339.12

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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.