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Finding the Fourth Proportional to 641,189.93, 885,594.97 and 512,573.82

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Solution

The fourth proportional to 641,189.93, 885,594.97 and 512,573.82 is: 707,953.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,189.93 : 885,594.97 = 512,573.82 : x
  2. Step 2: Convert to fraction form
    641,189.93/885,594.97 = 512,573.82/x
  3. Step 3: Cross multiply
    641,189.93x = 885,594.97 × 512,573.82
  4. Step 4: Simplify right side
    641,189.93x = 453,932,799,046.89
  5. Step 5: Solve for x
    x = 453,932,799,046.89/641,189.93
  6. Step 6: Final answer
    x = 707,953.73

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.