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Finding the Fourth Proportional to 439,243.52, 606,162.78 and 257,959.28

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Solution

The fourth proportional to 439,243.52, 606,162.78 and 257,959.28 is: 355,987.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,243.52 : 606,162.78 = 257,959.28 : x
  2. Step 2: Convert to fraction form
    439,243.52/606,162.78 = 257,959.28/x
  3. Step 3: Cross multiply
    439,243.52x = 606,162.78 × 257,959.28
  4. Step 4: Simplify right side
    439,243.52x = 156,365,314,291.60
  5. Step 5: Solve for x
    x = 156,365,314,291.60/439,243.52
  6. Step 6: Final answer
    x = 355,987.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.