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Finding the Fourth Proportional to 47,406.80, 71,033.40 and 39,573.20

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Solution

The fourth proportional to 47,406.80, 71,033.40 and 39,573.20 is: 59,295.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,406.80 : 71,033.40 = 39,573.20 : x
  2. Step 2: Convert to fraction form
    47,406.80/71,033.40 = 39,573.20/x
  3. Step 3: Cross multiply
    47,406.80x = 71,033.40 × 39,573.20
  4. Step 4: Simplify right side
    47,406.80x = 2,811,018,944.88
  5. Step 5: Solve for x
    x = 2,811,018,944.88/47,406.80
  6. Step 6: Final answer
    x = 59,295.69

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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.