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Finding the Fourth Proportional to 99,689.52, 149,542.37 and 29,568.63

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Solution

The fourth proportional to 99,689.52, 149,542.37 and 29,568.63 is: 44,355.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,689.52 : 149,542.37 = 29,568.63 : x
  2. Step 2: Convert to fraction form
    99,689.52/149,542.37 = 29,568.63/x
  3. Step 3: Cross multiply
    99,689.52x = 149,542.37 × 29,568.63
  4. Step 4: Simplify right side
    99,689.52x = 4,421,763,007.85
  5. Step 5: Solve for x
    x = 4,421,763,007.85/99,689.52
  6. Step 6: Final answer
    x = 44,355.34

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1.5x scale

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.