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Finding the Fourth Proportional to 70,342.48, 105,509.94 and 17,752.42

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Solution

The fourth proportional to 70,342.48, 105,509.94 and 17,752.42 is: 26,627.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,342.48 : 105,509.94 = 17,752.42 : x
  2. Step 2: Convert to fraction form
    70,342.48/105,509.94 = 17,752.42/x
  3. Step 3: Cross multiply
    70,342.48x = 105,509.94 × 17,752.42
  4. Step 4: Simplify right side
    70,342.48x = 1,873,056,769.05
  5. Step 5: Solve for x
    x = 1,873,056,769.05/70,342.48
  6. Step 6: Final answer
    x = 26,627.68

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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.