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Finding the Fourth Proportional to 643,782.92, 965,674.46 and 244,423.90

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Solution

The fourth proportional to 643,782.92, 965,674.46 and 244,423.90 is: 366,635.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,782.92 : 965,674.46 = 244,423.90 : x
  2. Step 2: Convert to fraction form
    643,782.92/965,674.46 = 244,423.90/x
  3. Step 3: Cross multiply
    643,782.92x = 965,674.46 × 244,423.90
  4. Step 4: Simplify right side
    643,782.92x = 236,033,922,349.57
  5. Step 5: Solve for x
    x = 236,033,922,349.57/643,782.92
  6. Step 6: Final answer
    x = 366,635.89

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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.