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Finding the Fourth Proportional to 248,405.40, 372,665.94 and 70,914.84

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Solution

The fourth proportional to 248,405.40, 372,665.94 and 70,914.84 is: 106,388.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,405.40 : 372,665.94 = 70,914.84 : x
  2. Step 2: Convert to fraction form
    248,405.40/372,665.94 = 70,914.84/x
  3. Step 3: Cross multiply
    248,405.40x = 372,665.94 × 70,914.84
  4. Step 4: Simplify right side
    248,405.40x = 26,427,545,508.55
  5. Step 5: Solve for x
    x = 26,427,545,508.55/248,405.40
  6. Step 6: Final answer
    x = 106,388.77

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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.