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Finding the Fourth Proportional to 313,169.16, 469,753.74 and 91,553.16

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Solution

The fourth proportional to 313,169.16, 469,753.74 and 91,553.16 is: 137,329.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,169.16 : 469,753.74 = 91,553.16 : x
  2. Step 2: Convert to fraction form
    313,169.16/469,753.74 = 91,553.16/x
  3. Step 3: Cross multiply
    313,169.16x = 469,753.74 × 91,553.16
  4. Step 4: Simplify right side
    313,169.16x = 43,007,439,318.82
  5. Step 5: Solve for x
    x = 43,007,439,318.82/313,169.16
  6. Step 6: Final answer
    x = 137,329.74

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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.