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Finding the Fourth Proportional to 99,564.70, 149,128.35 and 60,052.90

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Solution

The fourth proportional to 99,564.70, 149,128.35 and 60,052.90 is: 89,947.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,564.70 : 149,128.35 = 60,052.90 : x
  2. Step 2: Convert to fraction form
    99,564.70/149,128.35 = 60,052.90/x
  3. Step 3: Cross multiply
    99,564.70x = 149,128.35 × 60,052.90
  4. Step 4: Simplify right side
    99,564.70x = 8,955,589,889.72
  5. Step 5: Solve for x
    x = 8,955,589,889.72/99,564.70
  6. Step 6: Final answer
    x = 89,947.44

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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.