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Finding the Fourth Proportional to 103,649.20, 155,358.60 and 44,474.80

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Solution

The fourth proportional to 103,649.20, 155,358.60 and 44,474.80 is: 66,662.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,649.20 : 155,358.60 = 44,474.80 : x
  2. Step 2: Convert to fraction form
    103,649.20/155,358.60 = 44,474.80/x
  3. Step 3: Cross multiply
    103,649.20x = 155,358.60 × 44,474.80
  4. Step 4: Simplify right side
    103,649.20x = 6,909,542,663.28
  5. Step 5: Solve for x
    x = 6,909,542,663.28/103,649.20
  6. Step 6: Final answer
    x = 66,662.77

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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.