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Finding the Fourth Proportional to 386,063.55, 579,186.44 and 133,346.14

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Solution

The fourth proportional to 386,063.55, 579,186.44 and 133,346.14 is: 200,050.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,063.55 : 579,186.44 = 133,346.14 : x
  2. Step 2: Convert to fraction form
    386,063.55/579,186.44 = 133,346.14/x
  3. Step 3: Cross multiply
    386,063.55x = 579,186.44 × 133,346.14
  4. Step 4: Simplify right side
    386,063.55x = 77,232,273,497.69
  5. Step 5: Solve for x
    x = 77,232,273,497.69/386,063.55
  6. Step 6: Final answer
    x = 200,050.67

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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.