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Finding the Fourth Proportional to 651,791.80, 977,687.70 and 231,110.20

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Solution

The fourth proportional to 651,791.80, 977,687.70 and 231,110.20 is: 346,665.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,791.80 : 977,687.70 = 231,110.20 : x
  2. Step 2: Convert to fraction form
    651,791.80/977,687.70 = 231,110.20/x
  3. Step 3: Cross multiply
    651,791.80x = 977,687.70 × 231,110.20
  4. Step 4: Simplify right side
    651,791.80x = 225,953,599,884.54
  5. Step 5: Solve for x
    x = 225,953,599,884.54/651,791.80
  6. Step 6: Final answer
    x = 346,665.30

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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.