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Finding the Fourth Proportional to 79,615.22, 109,871.65 and 43,807.86

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Solution

The fourth proportional to 79,615.22, 109,871.65 and 43,807.86 is: 60,456.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,615.22 : 109,871.65 = 43,807.86 : x
  2. Step 2: Convert to fraction form
    79,615.22/109,871.65 = 43,807.86/x
  3. Step 3: Cross multiply
    79,615.22x = 109,871.65 × 43,807.86
  4. Step 4: Simplify right side
    79,615.22x = 4,813,241,861.17
  5. Step 5: Solve for x
    x = 4,813,241,861.17/79,615.22
  6. Step 6: Final answer
    x = 60,456.30

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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.