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Finding the Fourth Proportional to 171,531.23, 236,635.47 and 103,526.47

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Solution

The fourth proportional to 171,531.23, 236,635.47 and 103,526.47 is: 142,819.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,531.23 : 236,635.47 = 103,526.47 : x
  2. Step 2: Convert to fraction form
    171,531.23/236,635.47 = 103,526.47/x
  3. Step 3: Cross multiply
    171,531.23x = 236,635.47 × 103,526.47
  4. Step 4: Simplify right side
    171,531.23x = 24,498,033,850.61
  5. Step 5: Solve for x
    x = 24,498,033,850.61/171,531.23
  6. Step 6: Final answer
    x = 142,819.67

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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.