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Finding the Fourth Proportional to 511,997.80, 767,996.70 and 157,066.60

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Solution

The fourth proportional to 511,997.80, 767,996.70 and 157,066.60 is: 235,599.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,997.80 : 767,996.70 = 157,066.60 : x
  2. Step 2: Convert to fraction form
    511,997.80/767,996.70 = 157,066.60/x
  3. Step 3: Cross multiply
    511,997.80x = 767,996.70 × 157,066.60
  4. Step 4: Simplify right side
    511,997.80x = 120,626,630,480.22
  5. Step 5: Solve for x
    x = 120,626,630,480.22/511,997.80
  6. Step 6: Final answer
    x = 235,599.90

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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.