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Finding the Fourth Proportional to 865,581.60, 1,297,335.60 and 444,640.80

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Solution

The fourth proportional to 865,581.60, 1,297,335.60 and 444,640.80 is: 666,428.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,581.60 : 1,297,335.60 = 444,640.80 : x
  2. Step 2: Convert to fraction form
    865,581.60/1,297,335.60 = 444,640.80/x
  3. Step 3: Cross multiply
    865,581.60x = 1,297,335.60 × 444,640.80
  4. Step 4: Simplify right side
    865,581.60x = 576,848,339,052.48
  5. Step 5: Solve for x
    x = 576,848,339,052.48/865,581.60
  6. Step 6: Final answer
    x = 666,428.61

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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.