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Finding the Fourth Proportional to 81,655.29, 122,484.15 and 29,063.41

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Solution

The fourth proportional to 81,655.29, 122,484.15 and 29,063.41 is: 43,595.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,655.29 : 122,484.15 = 29,063.41 : x
  2. Step 2: Convert to fraction form
    81,655.29/122,484.15 = 29,063.41/x
  3. Step 3: Cross multiply
    81,655.29x = 122,484.15 × 29,063.41
  4. Step 4: Simplify right side
    81,655.29x = 3,559,806,763.74
  5. Step 5: Solve for x
    x = 3,559,806,763.74/81,655.29
  6. Step 6: Final answer
    x = 43,595.54

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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.