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Finding the Fourth Proportional to 248,142.60, 342,419.94 and 134,962.92

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Solution

The fourth proportional to 248,142.60, 342,419.94 and 134,962.92 is: 186,239.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,142.60 : 342,419.94 = 134,962.92 : x
  2. Step 2: Convert to fraction form
    248,142.60/342,419.94 = 134,962.92/x
  3. Step 3: Cross multiply
    248,142.60x = 342,419.94 × 134,962.92
  4. Step 4: Simplify right side
    248,142.60x = 46,213,994,968.62
  5. Step 5: Solve for x
    x = 46,213,994,968.62/248,142.60
  6. Step 6: Final answer
    x = 186,239.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.