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Finding the Fourth Proportional to 404,630.40, 606,945.60 and 105,086.40

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Solution

The fourth proportional to 404,630.40, 606,945.60 and 105,086.40 is: 157,629.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,630.40 : 606,945.60 = 105,086.40 : x
  2. Step 2: Convert to fraction form
    404,630.40/606,945.60 = 105,086.40/x
  3. Step 3: Cross multiply
    404,630.40x = 606,945.60 × 105,086.40
  4. Step 4: Simplify right side
    404,630.40x = 63,781,728,099.84
  5. Step 5: Solve for x
    x = 63,781,728,099.84/404,630.40
  6. Step 6: Final answer
    x = 157,629.60

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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.