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Finding the Fourth Proportional to 59,963.60, 89,944.15 and 19,985.48

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Solution

The fourth proportional to 59,963.60, 89,944.15 and 19,985.48 is: 29,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,963.60 : 89,944.15 = 19,985.48 : x
  2. Step 2: Convert to fraction form
    59,963.60/89,944.15 = 19,985.48/x
  3. Step 3: Cross multiply
    59,963.60x = 89,944.15 × 19,985.48
  4. Step 4: Simplify right side
    59,963.60x = 1,797,576,960.98
  5. Step 5: Solve for x
    x = 1,797,576,960.98/59,963.60
  6. Step 6: Final answer
    x = 29,977.80

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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.