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Finding the Fourth Proportional to 611,704.15, 917,556.23 and 454,240.15

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Solution

The fourth proportional to 611,704.15, 917,556.23 and 454,240.15 is: 681,360.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,704.15 : 917,556.23 = 454,240.15 : x
  2. Step 2: Convert to fraction form
    611,704.15/917,556.23 = 454,240.15/x
  3. Step 3: Cross multiply
    611,704.15x = 917,556.23 × 454,240.15
  4. Step 4: Simplify right side
    611,704.15x = 416,790,877,277.43
  5. Step 5: Solve for x
    x = 416,790,877,277.43/611,704.15
  6. Step 6: Final answer
    x = 681,360.23

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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.