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Finding the Fourth Proportional to 70,042.35, 104,969.43 and 65,558.46

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Solution

The fourth proportional to 70,042.35, 104,969.43 and 65,558.46 is: 98,249.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,042.35 : 104,969.43 = 65,558.46 : x
  2. Step 2: Convert to fraction form
    70,042.35/104,969.43 = 65,558.46/x
  3. Step 3: Cross multiply
    70,042.35x = 104,969.43 × 65,558.46
  4. Step 4: Simplify right side
    70,042.35x = 6,881,634,177.88
  5. Step 5: Solve for x
    x = 6,881,634,177.88/70,042.35
  6. Step 6: Final answer
    x = 98,249.62

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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.