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Finding the Fourth Proportional to 275,427.60, 413,141.40 and 170,451.60

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Solution

The fourth proportional to 275,427.60, 413,141.40 and 170,451.60 is: 255,677.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,427.60 : 413,141.40 = 170,451.60 : x
  2. Step 2: Convert to fraction form
    275,427.60/413,141.40 = 170,451.60/x
  3. Step 3: Cross multiply
    275,427.60x = 413,141.40 × 170,451.60
  4. Step 4: Simplify right side
    275,427.60x = 70,420,612,656.24
  5. Step 5: Solve for x
    x = 70,420,612,656.24/275,427.60
  6. Step 6: Final answer
    x = 255,677.40

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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.