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Finding the Fourth Proportional to 605,615.40, 910,391.40 and 519,010.20

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Solution

The fourth proportional to 605,615.40, 910,391.40 and 519,010.20 is: 780,202.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,615.40 : 910,391.40 = 519,010.20 : x
  2. Step 2: Convert to fraction form
    605,615.40/910,391.40 = 519,010.20/x
  3. Step 3: Cross multiply
    605,615.40x = 910,391.40 × 519,010.20
  4. Step 4: Simplify right side
    605,615.40x = 472,502,422,592.28
  5. Step 5: Solve for x
    x = 472,502,422,592.28/605,615.40
  6. Step 6: Final answer
    x = 780,202.13

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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.