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Finding the Fourth Proportional to 717,253.26, 989,809.39 and 394,962.56

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Solution

The fourth proportional to 717,253.26, 989,809.39 and 394,962.56 is: 545,048.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,253.26 : 989,809.39 = 394,962.56 : x
  2. Step 2: Convert to fraction form
    717,253.26/989,809.39 = 394,962.56/x
  3. Step 3: Cross multiply
    717,253.26x = 989,809.39 × 394,962.56
  4. Step 4: Simplify right side
    717,253.26x = 390,937,650,586.44
  5. Step 5: Solve for x
    x = 390,937,650,586.44/717,253.26
  6. Step 6: Final answer
    x = 545,048.27

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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.