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Finding the Fourth Proportional to 64,845.86, 89,561.12 and 43,588.22

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Solution

The fourth proportional to 64,845.86, 89,561.12 and 43,588.22 is: 60,201.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,845.86 : 89,561.12 = 43,588.22 : x
  2. Step 2: Convert to fraction form
    64,845.86/89,561.12 = 43,588.22/x
  3. Step 3: Cross multiply
    64,845.86x = 89,561.12 × 43,588.22
  4. Step 4: Simplify right side
    64,845.86x = 3,903,809,136.26
  5. Step 5: Solve for x
    x = 3,903,809,136.26/64,845.86
  6. Step 6: Final answer
    x = 60,201.37

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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.