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Finding the Fourth Proportional to 265,501.80, 398,252.70 and 171,023.40

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Solution

The fourth proportional to 265,501.80, 398,252.70 and 171,023.40 is: 256,535.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,501.80 : 398,252.70 = 171,023.40 : x
  2. Step 2: Convert to fraction form
    265,501.80/398,252.70 = 171,023.40/x
  3. Step 3: Cross multiply
    265,501.80x = 398,252.70 × 171,023.40
  4. Step 4: Simplify right side
    265,501.80x = 68,110,530,813.18
  5. Step 5: Solve for x
    x = 68,110,530,813.18/265,501.80
  6. Step 6: Final answer
    x = 256,535.10

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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.