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Finding the Fourth Proportional to 688,573.86, 950,171.34 and 382,630.80

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Solution

The fourth proportional to 688,573.86, 950,171.34 and 382,630.80 is: 527,996.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,573.86 : 950,171.34 = 382,630.80 : x
  2. Step 2: Convert to fraction form
    688,573.86/950,171.34 = 382,630.80/x
  3. Step 3: Cross multiply
    688,573.86x = 950,171.34 × 382,630.80
  4. Step 4: Simplify right side
    688,573.86x = 363,564,819,961.27
  5. Step 5: Solve for x
    x = 363,564,819,961.27/688,573.86
  6. Step 6: Final answer
    x = 527,996.84

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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.