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Finding the Fourth Proportional to 168,413.20, 252,036.60 and 154,416.40

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Solution

The fourth proportional to 168,413.20, 252,036.60 and 154,416.40 is: 231,089.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,413.20 : 252,036.60 = 154,416.40 : x
  2. Step 2: Convert to fraction form
    168,413.20/252,036.60 = 154,416.40/x
  3. Step 3: Cross multiply
    168,413.20x = 252,036.60 × 154,416.40
  4. Step 4: Simplify right side
    168,413.20x = 38,918,584,440.24
  5. Step 5: Solve for x
    x = 38,918,584,440.24/168,413.20
  6. Step 6: Final answer
    x = 231,089.87

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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.