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Finding the Fourth Proportional to 332,647.80, 498,971.70 and 122,258.40

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Solution

The fourth proportional to 332,647.80, 498,971.70 and 122,258.40 is: 183,387.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,647.80 : 498,971.70 = 122,258.40 : x
  2. Step 2: Convert to fraction form
    332,647.80/498,971.70 = 122,258.40/x
  3. Step 3: Cross multiply
    332,647.80x = 498,971.70 × 122,258.40
  4. Step 4: Simplify right side
    332,647.80x = 61,003,481,687.28
  5. Step 5: Solve for x
    x = 61,003,481,687.28/332,647.80
  6. Step 6: Final answer
    x = 183,387.60

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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.