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Finding the Fourth Proportional to 56,949.40, 85,424.10 and 54,227.80

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Solution

The fourth proportional to 56,949.40, 85,424.10 and 54,227.80 is: 81,341.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,949.40 : 85,424.10 = 54,227.80 : x
  2. Step 2: Convert to fraction form
    56,949.40/85,424.10 = 54,227.80/x
  3. Step 3: Cross multiply
    56,949.40x = 85,424.10 × 54,227.80
  4. Step 4: Simplify right side
    56,949.40x = 4,632,361,009.98
  5. Step 5: Solve for x
    x = 4,632,361,009.98/56,949.40
  6. Step 6: Final answer
    x = 81,341.70

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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.