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Finding the Fourth Proportional to 661,190.40, 991,785.60 and 544,550.40

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Solution

The fourth proportional to 661,190.40, 991,785.60 and 544,550.40 is: 816,825.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,190.40 : 991,785.60 = 544,550.40 : x
  2. Step 2: Convert to fraction form
    661,190.40/991,785.60 = 544,550.40/x
  3. Step 3: Cross multiply
    661,190.40x = 991,785.60 × 544,550.40
  4. Step 4: Simplify right side
    661,190.40x = 540,077,245,194.24
  5. Step 5: Solve for x
    x = 540,077,245,194.24/661,190.40
  6. Step 6: Final answer
    x = 816,825.60

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Double scale
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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.