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Finding the Fourth Proportional to 619,511.60, 929,048.70 and 220,165.40

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Solution

The fourth proportional to 619,511.60, 929,048.70 and 220,165.40 is: 330,170.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,511.60 : 929,048.70 = 220,165.40 : x
  2. Step 2: Convert to fraction form
    619,511.60/929,048.70 = 220,165.40/x
  3. Step 3: Cross multiply
    619,511.60x = 929,048.70 × 220,165.40
  4. Step 4: Simplify right side
    619,511.60x = 204,544,378,654.98
  5. Step 5: Solve for x
    x = 204,544,378,654.98/619,511.60
  6. Step 6: Final answer
    x = 330,170.38

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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.