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Finding the Fourth Proportional to 408,335.90, 612,463.94 and 124,028.92

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Solution

The fourth proportional to 408,335.90, 612,463.94 and 124,028.92 is: 186,031.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,335.90 : 612,463.94 = 124,028.92 : x
  2. Step 2: Convert to fraction form
    408,335.90/612,463.94 = 124,028.92/x
  3. Step 3: Cross multiply
    408,335.90x = 612,463.94 × 124,028.92
  4. Step 4: Simplify right side
    408,335.90x = 75,963,241,017.14
  5. Step 5: Solve for x
    x = 75,963,241,017.14/408,335.90
  6. Step 6: Final answer
    x = 186,031.26

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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.