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Finding the Fourth Proportional to 393,576.77, 590,451.12 and 127,364.20

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Solution

The fourth proportional to 393,576.77, 590,451.12 and 127,364.20 is: 191,074.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,576.77 : 590,451.12 = 127,364.20 : x
  2. Step 2: Convert to fraction form
    393,576.77/590,451.12 = 127,364.20/x
  3. Step 3: Cross multiply
    393,576.77x = 590,451.12 × 127,364.20
  4. Step 4: Simplify right side
    393,576.77x = 75,202,333,061.78
  5. Step 5: Solve for x
    x = 75,202,333,061.78/393,576.77
  6. Step 6: Final answer
    x = 191,074.11

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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.