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Finding the Fourth Proportional to 621,704.10, 932,556.15 and 611,336.10

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Solution

The fourth proportional to 621,704.10, 932,556.15 and 611,336.10 is: 917,004.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,704.10 : 932,556.15 = 611,336.10 : x
  2. Step 2: Convert to fraction form
    621,704.10/932,556.15 = 611,336.10/x
  3. Step 3: Cross multiply
    621,704.10x = 932,556.15 × 611,336.10
  4. Step 4: Simplify right side
    621,704.10x = 570,105,239,772.02
  5. Step 5: Solve for x
    x = 570,105,239,772.02/621,704.10
  6. Step 6: Final answer
    x = 917,004.15

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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.