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Finding the Fourth Proportional to 99,662.54, 149,409.15 and 46,385.46

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Solution

The fourth proportional to 99,662.54, 149,409.15 and 46,385.46 is: 69,538.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,662.54 : 149,409.15 = 46,385.46 : x
  2. Step 2: Convert to fraction form
    99,662.54/149,409.15 = 46,385.46/x
  3. Step 3: Cross multiply
    99,662.54x = 149,409.15 × 46,385.46
  4. Step 4: Simplify right side
    99,662.54x = 6,930,411,919.03
  5. Step 5: Solve for x
    x = 6,930,411,919.03/99,662.54
  6. Step 6: Final answer
    x = 69,538.78

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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.