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Finding the Fourth Proportional to 644,941.20, 967,411.80 and 171,674.40

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Solution

The fourth proportional to 644,941.20, 967,411.80 and 171,674.40 is: 257,511.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,941.20 : 967,411.80 = 171,674.40 : x
  2. Step 2: Convert to fraction form
    644,941.20/967,411.80 = 171,674.40/x
  3. Step 3: Cross multiply
    644,941.20x = 967,411.80 × 171,674.40
  4. Step 4: Simplify right side
    644,941.20x = 166,079,840,317.92
  5. Step 5: Solve for x
    x = 166,079,840,317.92/644,941.20
  6. Step 6: Final answer
    x = 257,511.60

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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.