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Finding the Fourth Proportional to 269,172.40, 403,260.45 and 156,906.40

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Solution

The fourth proportional to 269,172.40, 403,260.45 and 156,906.40 is: 235,069.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,172.40 : 403,260.45 = 156,906.40 : x
  2. Step 2: Convert to fraction form
    269,172.40/403,260.45 = 156,906.40/x
  3. Step 3: Cross multiply
    269,172.40x = 403,260.45 × 156,906.40
  4. Step 4: Simplify right side
    269,172.40x = 63,274,145,471.88
  5. Step 5: Solve for x
    x = 63,274,145,471.88/269,172.40
  6. Step 6: Final answer
    x = 235,069.22

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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.