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Finding the Fourth Proportional to 34,693.76, 47,879.70 and 19,581.05

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Solution

The fourth proportional to 34,693.76, 47,879.70 and 19,581.05 is: 27,023.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,693.76 : 47,879.70 = 19,581.05 : x
  2. Step 2: Convert to fraction form
    34,693.76/47,879.70 = 19,581.05/x
  3. Step 3: Cross multiply
    34,693.76x = 47,879.70 × 19,581.05
  4. Step 4: Simplify right side
    34,693.76x = 937,534,799.69
  5. Step 5: Solve for x
    x = 937,534,799.69/34,693.76
  6. Step 6: Final answer
    x = 27,023.15

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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.