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Finding the Fourth Proportional to 265,511.80, 398,267.70 and 171,033.40

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Solution

The fourth proportional to 265,511.80, 398,267.70 and 171,033.40 is: 256,550.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,511.80 : 398,267.70 = 171,033.40 : x
  2. Step 2: Convert to fraction form
    265,511.80/398,267.70 = 171,033.40/x
  3. Step 3: Cross multiply
    265,511.80x = 398,267.70 × 171,033.40
  4. Step 4: Simplify right side
    265,511.80x = 68,117,078,841.18
  5. Step 5: Solve for x
    x = 68,117,078,841.18/265,511.80
  6. Step 6: Final answer
    x = 256,550.10

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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.