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Finding the Fourth Proportional to 248,615.40, 372,923.10 and 108,647.40

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Solution

The fourth proportional to 248,615.40, 372,923.10 and 108,647.40 is: 162,971.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,615.40 : 372,923.10 = 108,647.40 : x
  2. Step 2: Convert to fraction form
    248,615.40/372,923.10 = 108,647.40/x
  3. Step 3: Cross multiply
    248,615.40x = 372,923.10 × 108,647.40
  4. Step 4: Simplify right side
    248,615.40x = 40,517,125,214.94
  5. Step 5: Solve for x
    x = 40,517,125,214.94/248,615.40
  6. Step 6: Final answer
    x = 162,971.10

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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.