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Finding the Fourth Proportional to 654,047.70, 981,071.55 and 453,945.30

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Solution

The fourth proportional to 654,047.70, 981,071.55 and 453,945.30 is: 680,917.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,047.70 : 981,071.55 = 453,945.30 : x
  2. Step 2: Convert to fraction form
    654,047.70/981,071.55 = 453,945.30/x
  3. Step 3: Cross multiply
    654,047.70x = 981,071.55 × 453,945.30
  4. Step 4: Simplify right side
    654,047.70x = 445,352,819,086.22
  5. Step 5: Solve for x
    x = 445,352,819,086.22/654,047.70
  6. Step 6: Final answer
    x = 680,917.95

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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.