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Finding the Fourth Proportional to 511,259.60, 766,889.40 and 386,843.60

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Solution

The fourth proportional to 511,259.60, 766,889.40 and 386,843.60 is: 580,265.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,259.60 : 766,889.40 = 386,843.60 : x
  2. Step 2: Convert to fraction form
    511,259.60/766,889.40 = 386,843.60/x
  3. Step 3: Cross multiply
    511,259.60x = 766,889.40 × 386,843.60
  4. Step 4: Simplify right side
    511,259.60x = 296,666,256,297.84
  5. Step 5: Solve for x
    x = 296,666,256,297.84/511,259.60
  6. Step 6: Final answer
    x = 580,265.40

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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.