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Finding the Fourth Proportional to 447,513.12, 670,980.41 and 191,512.82

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Solution

The fourth proportional to 447,513.12, 670,980.41 and 191,512.82 is: 287,145.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,513.12 : 670,980.41 = 191,512.82 : x
  2. Step 2: Convert to fraction form
    447,513.12/670,980.41 = 191,512.82/x
  3. Step 3: Cross multiply
    447,513.12x = 670,980.41 × 191,512.82
  4. Step 4: Simplify right side
    447,513.12x = 128,501,351,921.92
  5. Step 5: Solve for x
    x = 128,501,351,921.92/447,513.12
  6. Step 6: Final answer
    x = 287,145.44

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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.