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Finding the Fourth Proportional to 79,314.78, 109,457.46 and 43,506.30

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Solution

The fourth proportional to 79,314.78, 109,457.46 and 43,506.30 is: 60,040.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,314.78 : 109,457.46 = 43,506.30 : x
  2. Step 2: Convert to fraction form
    79,314.78/109,457.46 = 43,506.30/x
  3. Step 3: Cross multiply
    79,314.78x = 109,457.46 × 43,506.30
  4. Step 4: Simplify right side
    79,314.78x = 4,762,089,092.00
  5. Step 5: Solve for x
    x = 4,762,089,092.00/79,314.78
  6. Step 6: Final answer
    x = 60,040.37

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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.