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Finding the Fourth Proportional to 47,100.80, 70,650.92 and 12,040.40

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Solution

The fourth proportional to 47,100.80, 70,650.92 and 12,040.40 is: 18,060.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,100.80 : 70,650.92 = 12,040.40 : x
  2. Step 2: Convert to fraction form
    47,100.80/70,650.92 = 12,040.40/x
  3. Step 3: Cross multiply
    47,100.80x = 70,650.92 × 12,040.40
  4. Step 4: Simplify right side
    47,100.80x = 850,665,337.17
  5. Step 5: Solve for x
    x = 850,665,337.17/47,100.80
  6. Step 6: Final answer
    x = 18,060.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.