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Finding the Fourth Proportional to 109,893.14, 151,671.96 and 64,571.12

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Solution

The fourth proportional to 109,893.14, 151,671.96 and 64,571.12 is: 89,119.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,893.14 : 151,671.96 = 64,571.12 : x
  2. Step 2: Convert to fraction form
    109,893.14/151,671.96 = 64,571.12/x
  3. Step 3: Cross multiply
    109,893.14x = 151,671.96 × 64,571.12
  4. Step 4: Simplify right side
    109,893.14x = 9,793,628,329.80
  5. Step 5: Solve for x
    x = 9,793,628,329.80/109,893.14
  6. Step 6: Final answer
    x = 89,119.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.