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Finding the Fourth Proportional to 534,793.40, 802,190.10 and 429,817.40

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Solution

The fourth proportional to 534,793.40, 802,190.10 and 429,817.40 is: 644,726.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,793.40 : 802,190.10 = 429,817.40 : x
  2. Step 2: Convert to fraction form
    534,793.40/802,190.10 = 429,817.40/x
  3. Step 3: Cross multiply
    534,793.40x = 802,190.10 × 429,817.40
  4. Step 4: Simplify right side
    534,793.40x = 344,795,263,087.74
  5. Step 5: Solve for x
    x = 344,795,263,087.74/534,793.40
  6. Step 6: Final answer
    x = 644,726.10

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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.