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Finding the Fourth Proportional to 125,472.99, 188,109.09 and 65,471.37

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Solution

The fourth proportional to 125,472.99, 188,109.09 and 65,471.37 is: 98,154.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,472.99 : 188,109.09 = 65,471.37 : x
  2. Step 2: Convert to fraction form
    125,472.99/188,109.09 = 65,471.37/x
  3. Step 3: Cross multiply
    125,472.99x = 188,109.09 × 65,471.37
  4. Step 4: Simplify right side
    125,472.99x = 12,315,759,831.75
  5. Step 5: Solve for x
    x = 12,315,759,831.75/125,472.99
  6. Step 6: Final answer
    x = 98,154.67

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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.