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Finding the Fourth Proportional to 124,571.40, 171,912.30 and 70,864.12

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Solution

The fourth proportional to 124,571.40, 171,912.30 and 70,864.12 is: 97,794.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,571.40 : 171,912.30 = 70,864.12 : x
  2. Step 2: Convert to fraction form
    124,571.40/171,912.30 = 70,864.12/x
  3. Step 3: Cross multiply
    124,571.40x = 171,912.30 × 70,864.12
  4. Step 4: Simplify right side
    124,571.40x = 12,182,413,856.68
  5. Step 5: Solve for x
    x = 12,182,413,856.68/124,571.40
  6. Step 6: Final answer
    x = 97,794.63

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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.