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Finding the Fourth Proportional to 461,556.80, 692,428.80 and 261,972.80

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Solution

The fourth proportional to 461,556.80, 692,428.80 and 261,972.80 is: 393,012.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,556.80 : 692,428.80 = 261,972.80 : x
  2. Step 2: Convert to fraction form
    461,556.80/692,428.80 = 261,972.80/x
  3. Step 3: Cross multiply
    461,556.80x = 692,428.80 × 261,972.80
  4. Step 4: Simplify right side
    461,556.80x = 181,397,511,536.64
  5. Step 5: Solve for x
    x = 181,397,511,536.64/461,556.80
  6. Step 6: Final answer
    x = 393,012.33

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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.