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Finding the Fourth Proportional to 386,157.16, 579,313.10 and 133,446.92

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Solution

The fourth proportional to 386,157.16, 579,313.10 and 133,446.92 is: 200,197.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,157.16 : 579,313.10 = 133,446.92 : x
  2. Step 2: Convert to fraction form
    386,157.16/579,313.10 = 133,446.92/x
  3. Step 3: Cross multiply
    386,157.16x = 579,313.10 × 133,446.92
  4. Step 4: Simplify right side
    386,157.16x = 77,307,548,910.65
  5. Step 5: Solve for x
    x = 77,307,548,910.65/386,157.16
  6. Step 6: Final answer
    x = 200,197.11

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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.