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Finding the Fourth Proportional to 328,556.90, 492,851.55 and 171,092.90

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Solution

The fourth proportional to 328,556.90, 492,851.55 and 171,092.90 is: 256,647.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,556.90 : 492,851.55 = 171,092.90 : x
  2. Step 2: Convert to fraction form
    328,556.90/492,851.55 = 171,092.90/x
  3. Step 3: Cross multiply
    328,556.90x = 492,851.55 × 171,092.90
  4. Step 4: Simplify right side
    328,556.90x = 84,323,400,959.00
  5. Step 5: Solve for x
    x = 84,323,400,959.00/328,556.90
  6. Step 6: Final answer
    x = 256,647.79

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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.