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Finding the Fourth Proportional to 70,432.82, 105,648.43 and 17,125.10

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Solution

The fourth proportional to 70,432.82, 105,648.43 and 17,125.10 is: 25,687.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,432.82 : 105,648.43 = 17,125.10 : x
  2. Step 2: Convert to fraction form
    70,432.82/105,648.43 = 17,125.10/x
  3. Step 3: Cross multiply
    70,432.82x = 105,648.43 × 17,125.10
  4. Step 4: Simplify right side
    70,432.82x = 1,809,239,928.59
  5. Step 5: Solve for x
    x = 1,809,239,928.59/70,432.82
  6. Step 6: Final answer
    x = 25,687.46

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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.