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Finding the Fourth Proportional to 74,991.89, 103,514.87 and 43,173.47

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Solution

The fourth proportional to 74,991.89, 103,514.87 and 43,173.47 is: 59,594.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,991.89 : 103,514.87 = 43,173.47 : x
  2. Step 2: Convert to fraction form
    74,991.89/103,514.87 = 43,173.47/x
  3. Step 3: Cross multiply
    74,991.89x = 103,514.87 × 43,173.47
  4. Step 4: Simplify right side
    74,991.89x = 4,469,096,501.22
  5. Step 5: Solve for x
    x = 4,469,096,501.22/74,991.89
  6. Step 6: Final answer
    x = 59,594.40

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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.