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Finding the Fourth Proportional to 511,323.62, 766,985.42 and 195,780.51

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Solution

The fourth proportional to 511,323.62, 766,985.42 and 195,780.51 is: 293,670.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,323.62 : 766,985.42 = 195,780.51 : x
  2. Step 2: Convert to fraction form
    511,323.62/766,985.42 = 195,780.51/x
  3. Step 3: Cross multiply
    511,323.62x = 766,985.42 × 195,780.51
  4. Step 4: Simplify right side
    511,323.62x = 150,160,797,179.62
  5. Step 5: Solve for x
    x = 150,160,797,179.62/511,323.62
  6. Step 6: Final answer
    x = 293,670.77

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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.