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Finding the Fourth Proportional to 619,353.25, 853,889.46 and 404,119.63

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Solution

The fourth proportional to 619,353.25, 853,889.46 and 404,119.63 is: 557,151.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,353.25 : 853,889.46 = 404,119.63 : x
  2. Step 2: Convert to fraction form
    619,353.25/853,889.46 = 404,119.63/x
  3. Step 3: Cross multiply
    619,353.25x = 853,889.46 × 404,119.63
  4. Step 4: Simplify right side
    619,353.25x = 345,073,492,636.10
  5. Step 5: Solve for x
    x = 345,073,492,636.10/619,353.25
  6. Step 6: Final answer
    x = 557,151.34

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.