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Finding the Fourth Proportional to 609,773.76, 841,665.60 and 394,905.60

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Solution

The fourth proportional to 609,773.76, 841,665.60 and 394,905.60 is: 545,084.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,773.76 : 841,665.60 = 394,905.60 : x
  2. Step 2: Convert to fraction form
    609,773.76/841,665.60 = 394,905.60/x
  3. Step 3: Cross multiply
    609,773.76x = 841,665.60 × 394,905.60
  4. Step 4: Simplify right side
    609,773.76x = 332,378,458,767.36
  5. Step 5: Solve for x
    x = 332,378,458,767.36/609,773.76
  6. Step 6: Final answer
    x = 545,084.88

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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.