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Finding the Fourth Proportional to 619,995.20, 930,079.20 and 265,006.40

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Solution

The fourth proportional to 619,995.20, 930,079.20 and 265,006.40 is: 397,546.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,995.20 : 930,079.20 = 265,006.40 : x
  2. Step 2: Convert to fraction form
    619,995.20/930,079.20 = 265,006.40/x
  3. Step 3: Cross multiply
    619,995.20x = 930,079.20 × 265,006.40
  4. Step 4: Simplify right side
    619,995.20x = 246,476,940,506.88
  5. Step 5: Solve for x
    x = 246,476,940,506.88/619,995.20
  6. Step 6: Final answer
    x = 397,546.53

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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.