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Finding the Fourth Proportional to 643,561.70, 965,342.55 and 494,554.10

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Solution

The fourth proportional to 643,561.70, 965,342.55 and 494,554.10 is: 741,831.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,561.70 : 965,342.55 = 494,554.10 : x
  2. Step 2: Convert to fraction form
    643,561.70/965,342.55 = 494,554.10/x
  3. Step 3: Cross multiply
    643,561.70x = 965,342.55 × 494,554.10
  4. Step 4: Simplify right side
    643,561.70x = 477,414,116,006.96
  5. Step 5: Solve for x
    x = 477,414,116,006.96/643,561.70
  6. Step 6: Final answer
    x = 741,831.15

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Double scale
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Similar ratio
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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.