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Finding the Fourth Proportional to 611,858.28, 844,485.21 and 390,954.27

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Solution

The fourth proportional to 611,858.28, 844,485.21 and 390,954.27 is: 539,594.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,858.28 : 844,485.21 = 390,954.27 : x
  2. Step 2: Convert to fraction form
    611,858.28/844,485.21 = 390,954.27/x
  3. Step 3: Cross multiply
    611,858.28x = 844,485.21 × 390,954.27
  4. Step 4: Simplify right side
    611,858.28x = 330,155,098,801.35
  5. Step 5: Solve for x
    x = 330,155,098,801.35/611,858.28
  6. Step 6: Final answer
    x = 539,594.07

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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.