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Finding the Fourth Proportional to 59,930.60, 89,723.10 and 53,709.80

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Solution

The fourth proportional to 59,930.60, 89,723.10 and 53,709.80 is: 80,409.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,930.60 : 89,723.10 = 53,709.80 : x
  2. Step 2: Convert to fraction form
    59,930.60/89,723.10 = 53,709.80/x
  3. Step 3: Cross multiply
    59,930.60x = 89,723.10 × 53,709.80
  4. Step 4: Simplify right side
    59,930.60x = 4,819,009,756.38
  5. Step 5: Solve for x
    x = 4,819,009,756.38/59,930.60
  6. Step 6: Final answer
    x = 80,409.84

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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.