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Finding the Fourth Proportional to 79,511.93, 109,728.47 and 43,702.84

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Solution

The fourth proportional to 79,511.93, 109,728.47 and 43,702.84 is: 60,311.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,511.93 : 109,728.47 = 43,702.84 : x
  2. Step 2: Convert to fraction form
    79,511.93/109,728.47 = 43,702.84/x
  3. Step 3: Cross multiply
    79,511.93x = 109,728.47 × 43,702.84
  4. Step 4: Simplify right side
    79,511.93x = 4,795,446,014.27
  5. Step 5: Solve for x
    x = 4,795,446,014.27/79,511.93
  6. Step 6: Final answer
    x = 60,311.03

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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.