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Finding the Fourth Proportional to 640,370.23, 960,555.34 and 241,100.57

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Solution

The fourth proportional to 640,370.23, 960,555.34 and 241,100.57 is: 361,650.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,370.23 : 960,555.34 = 241,100.57 : x
  2. Step 2: Convert to fraction form
    640,370.23/960,555.34 = 241,100.57/x
  3. Step 3: Cross multiply
    640,370.23x = 960,555.34 × 241,100.57
  4. Step 4: Simplify right side
    640,370.23x = 231,590,439,990.54
  5. Step 5: Solve for x
    x = 231,590,439,990.54/640,370.23
  6. Step 6: Final answer
    x = 361,650.85

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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.