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Finding the Fourth Proportional to 404,858.20, 607,460.10 and 194,387.80

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Solution

The fourth proportional to 404,858.20, 607,460.10 and 194,387.80 is: 291,664.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,858.20 : 607,460.10 = 194,387.80 : x
  2. Step 2: Convert to fraction form
    404,858.20/607,460.10 = 194,387.80/x
  3. Step 3: Cross multiply
    404,858.20x = 607,460.10 × 194,387.80
  4. Step 4: Simplify right side
    404,858.20x = 118,082,832,426.78
  5. Step 5: Solve for x
    x = 118,082,832,426.78/404,858.20
  6. Step 6: Final answer
    x = 291,664.67

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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.