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Finding the Fourth Proportional to 59,611.84, 89,281.60 and 28,469.12

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Solution

The fourth proportional to 59,611.84, 89,281.60 and 28,469.12 is: 42,638.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,611.84 : 89,281.60 = 28,469.12 : x
  2. Step 2: Convert to fraction form
    59,611.84/89,281.60 = 28,469.12/x
  3. Step 3: Cross multiply
    59,611.84x = 89,281.60 × 28,469.12
  4. Step 4: Simplify right side
    59,611.84x = 2,541,768,584.19
  5. Step 5: Solve for x
    x = 2,541,768,584.19/59,611.84
  6. Step 6: Final answer
    x = 42,638.65

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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.