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Finding the Fourth Proportional to 248,465.80, 372,701.94 and 70,978.60

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Solution

The fourth proportional to 248,465.80, 372,701.94 and 70,978.60 is: 106,468.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,465.80 : 372,701.94 = 70,978.60 : x
  2. Step 2: Convert to fraction form
    248,465.80/372,701.94 = 70,978.60/x
  3. Step 3: Cross multiply
    248,465.80x = 372,701.94 × 70,978.60
  4. Step 4: Simplify right side
    248,465.80x = 26,453,861,918.48
  5. Step 5: Solve for x
    x = 26,453,861,918.48/248,465.80
  6. Step 6: Final answer
    x = 106,468.83

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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.