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Finding the Fourth Proportional to 59,885.64, 89,729.94 and 47,485.32

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Solution

The fourth proportional to 59,885.64, 89,729.94 and 47,485.32 is: 71,149.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,885.64 : 89,729.94 = 47,485.32 : x
  2. Step 2: Convert to fraction form
    59,885.64/89,729.94 = 47,485.32/x
  3. Step 3: Cross multiply
    59,885.64x = 89,729.94 × 47,485.32
  4. Step 4: Simplify right side
    59,885.64x = 4,260,854,914.48
  5. Step 5: Solve for x
    x = 4,260,854,914.48/59,885.64
  6. Step 6: Final answer
    x = 71,149.86

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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.