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Finding the Fourth Proportional to 664,445.71, 996,668.57 and 379,936.69

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Solution

The fourth proportional to 664,445.71, 996,668.57 and 379,936.69 is: 569,905.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,445.71 : 996,668.57 = 379,936.69 : x
  2. Step 2: Convert to fraction form
    664,445.71/996,668.57 = 379,936.69/x
  3. Step 3: Cross multiply
    664,445.71x = 996,668.57 × 379,936.69
  4. Step 4: Simplify right side
    664,445.71x = 378,670,955,971.00
  5. Step 5: Solve for x
    x = 378,670,955,971.00/664,445.71
  6. Step 6: Final answer
    x = 569,905.04

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Similar ratio
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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.