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Finding the Fourth Proportional to 643,411.70, 965,117.55 and 494,404.10

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Solution

The fourth proportional to 643,411.70, 965,117.55 and 494,404.10 is: 741,606.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,411.70 : 965,117.55 = 494,404.10 : x
  2. Step 2: Convert to fraction form
    643,411.70/965,117.55 = 494,404.10/x
  3. Step 3: Cross multiply
    643,411.70x = 965,117.55 × 494,404.10
  4. Step 4: Simplify right side
    643,411.70x = 477,158,073,701.96
  5. Step 5: Solve for x
    x = 477,158,073,701.96/643,411.70
  6. Step 6: Final answer
    x = 741,606.15

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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.