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Finding the Fourth Proportional to 38,169.99, 57,258.92 and 13,210.00

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Solution

The fourth proportional to 38,169.99, 57,258.92 and 13,210.00 is: 19,816.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,169.99 : 57,258.92 = 13,210.00 : x
  2. Step 2: Convert to fraction form
    38,169.99/57,258.92 = 13,210.00/x
  3. Step 3: Cross multiply
    38,169.99x = 57,258.92 × 13,210.00
  4. Step 4: Simplify right side
    38,169.99x = 756,390,470.85
  5. Step 5: Solve for x
    x = 756,390,470.85/38,169.99
  6. Step 6: Final answer
    x = 19,816.36

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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.