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Finding the Fourth Proportional to 283,794.90, 391,640.01 and 154,732.31

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Solution

The fourth proportional to 283,794.90, 391,640.01 and 154,732.31 is: 213,532.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,794.90 : 391,640.01 = 154,732.31 : x
  2. Step 2: Convert to fraction form
    283,794.90/391,640.01 = 154,732.31/x
  3. Step 3: Cross multiply
    283,794.90x = 391,640.01 × 154,732.31
  4. Step 4: Simplify right side
    283,794.90x = 60,599,364,888.53
  5. Step 5: Solve for x
    x = 60,599,364,888.53/283,794.90
  6. Step 6: Final answer
    x = 213,532.26

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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.