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Finding the Fourth Proportional to 386,796.63, 580,063.56 and 134,018.13

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Solution

The fourth proportional to 386,796.63, 580,063.56 and 134,018.13 is: 200,981.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,796.63 : 580,063.56 = 134,018.13 : x
  2. Step 2: Convert to fraction form
    386,796.63/580,063.56 = 134,018.13/x
  3. Step 3: Cross multiply
    386,796.63x = 580,063.56 × 134,018.13
  4. Step 4: Simplify right side
    386,796.63x = 77,739,033,592.34
  5. Step 5: Solve for x
    x = 77,739,033,592.34/386,796.63
  6. Step 6: Final answer
    x = 200,981.67

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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.