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Finding the Fourth Proportional to 74,662.20, 103,033.62 and 41,128.20

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Solution

The fourth proportional to 74,662.20, 103,033.62 and 41,128.20 is: 56,756.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,662.20 : 103,033.62 = 41,128.20 : x
  2. Step 2: Convert to fraction form
    74,662.20/103,033.62 = 41,128.20/x
  3. Step 3: Cross multiply
    74,662.20x = 103,033.62 × 41,128.20
  4. Step 4: Simplify right side
    74,662.20x = 4,237,587,330.08
  5. Step 5: Solve for x
    x = 4,237,587,330.08/74,662.20
  6. Step 6: Final answer
    x = 56,756.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.