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Finding the Fourth Proportional to 511,331.70, 766,997.40 and 156,345.69

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Solution

The fourth proportional to 511,331.70, 766,997.40 and 156,345.69 is: 234,518.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,331.70 : 766,997.40 = 156,345.69 : x
  2. Step 2: Convert to fraction form
    511,331.70/766,997.40 = 156,345.69/x
  3. Step 3: Cross multiply
    511,331.70x = 766,997.40 × 156,345.69
  4. Step 4: Simplify right side
    511,331.70x = 119,916,737,731.21
  5. Step 5: Solve for x
    x = 119,916,737,731.21/511,331.70
  6. Step 6: Final answer
    x = 234,518.49

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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.