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Finding the Fourth Proportional to 717,067.33, 989,515.35 and 394,714.46

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Solution

The fourth proportional to 717,067.33, 989,515.35 and 394,714.46 is: 544,685.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,067.33 : 989,515.35 = 394,714.46 : x
  2. Step 2: Convert to fraction form
    717,067.33/989,515.35 = 394,714.46/x
  3. Step 3: Cross multiply
    717,067.33x = 989,515.35 × 394,714.46
  4. Step 4: Simplify right side
    717,067.33x = 390,576,019,510.75
  5. Step 5: Solve for x
    x = 390,576,019,510.75/717,067.33
  6. Step 6: Final answer
    x = 544,685.28

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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.