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Finding the Fourth Proportional to 265,542.30, 398,313.45 and 255,044.70

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Solution

The fourth proportional to 265,542.30, 398,313.45 and 255,044.70 is: 382,567.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,542.30 : 398,313.45 = 255,044.70 : x
  2. Step 2: Convert to fraction form
    265,542.30/398,313.45 = 255,044.70/x
  3. Step 3: Cross multiply
    265,542.30x = 398,313.45 × 255,044.70
  4. Step 4: Simplify right side
    265,542.30x = 101,587,734,361.22
  5. Step 5: Solve for x
    x = 101,587,734,361.22/265,542.30
  6. Step 6: Final answer
    x = 382,567.05

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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.