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Finding the Fourth Proportional to 61,288.99, 91,970.20 and 26,228.68

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Solution

The fourth proportional to 61,288.99, 91,970.20 and 26,228.68 is: 39,358.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,288.99 : 91,970.20 = 26,228.68 : x
  2. Step 2: Convert to fraction form
    61,288.99/91,970.20 = 26,228.68/x
  3. Step 3: Cross multiply
    61,288.99x = 91,970.20 × 26,228.68
  4. Step 4: Simplify right side
    61,288.99x = 2,412,256,945.34
  5. Step 5: Solve for x
    x = 2,412,256,945.34/61,288.99
  6. Step 6: Final answer
    x = 39,358.73

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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.